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Insert apostrophes as appropriate in the follwoing sentences, or none if none is need.

1. Its too bad that the hospitals policy prohibits patients access to their own medical records.

2. Two sonograms were compatible with a fetus of 30 weeks gestation.

3 .On x-ray examination. the femur showed a fracture in its most distal portion of approximately two weeks duration.

4. Dr. Howards consultation was recieved two days before the pantients surgery was scheduled.

5. Although its clear that the genus has been identified, the species has not.
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Comments  (Page 3) 
Hi,

Dr. Howard's consultation . . .

Best wishes, Clive
1.It's too bad that the hospitals policy prohibits patients access to their own medical records.

2. Two sonograms were compatible with a fetus of 30 weeks gestation.

3. On x-ray examination,the femur showed a fracture in its most distal portion of approximately two weeks duration.

4. Dr. Howard's consultation was received two days before the patient's surgery was scheduled.

5. Although it's clear that the genus has been identified, the species has not.
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Differences between Past simple & Past perfect (simple)

From my point of view the sentence "I have written 3 pages of my essay today." means, that I haven't finished it yet. Some work is done ("I have done something already.") and I will work on it later in the future.

And the sentence "I wrote 3 pages of my essay today." means, that my essay is done, takes 3 pages. The writting ended in the past.
We use the Present perfect when there is a connection with the present.
Really complicated to explain, maybe some examples could help.

Here they are:
1. Study this axample situation:
Nick is looking for his key. He can't find it. He has lost his key.
("He has lost his key." means that he lost it a short time ago and he still doesn't have it.)

(This example is from the book "Grammar in Use" by Raymond Murphy)

2. Have you ever been to United States?
No, I haven't, but I have been to the Great Britain.
(This is very common phrase and means that you didn't take a trip to the US, but you can chage it and take the trip in the present or close future.)

(By the way, everyone please correct my mistakes, THX. It is very hard to check my punctuation, because I'm from the Czech Republic, and here are lot of rules of writting commas and they are different from English, so I hope you will help me with that.)
I wrote means you wrote something in the past and stopped already, while you have written is meaning it is just done and maybe still going to do it.
WROTE
Students: Are you brave enough to let our tutors analyse your pronunciation?
I wrote = Simple Past Tense -We refer or call or tell others about the events happened in the past, which were short lived and quickly finished.
I have written = Present Perfect Tense -We use it to say that a finished action or event is connected with the present in some way. e.g.he has broken his leg.(His leg is broken now.)
1. It's too bad that the hospital's policy prohibits patients' access to their own medical records.

2. Two sonograms were compatible with a fetus of 30 weeks' gestation.

3 .On x-ray examination. the femur showed a fracture in its most distal portion of approximately two weeks' duration.

4. Dr. Howards consultation was received two days before the patient's surgery was scheduled.

5. Although it's clear that the genus has been identified, the species has not...you may also 'highlight' a part of the text and press 'Quote'