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1. I'm looking for ___________ to cut this string.
a) a pair scissors b) a scissor c) a scissors d) some scissors
2.The _________ produced at our factory in Scotland.
a) good are b) good is c) goods are d) goods is
3. My father is not only the town mayor, he runs _______,too.
a) a business b) a piece of business c) business d) some business
4. When Martin _______ the car, he took it out for a drive.
a) had repaired b) has repaired c) repaired d) was repairing
5. Susan has to work very hard. I ________ do her job, I'm sure.
a)can't b) couldn't c) don't d) shouldn't

Please write answer soon.. Very Thanks for your help!..
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I'd say you can use either "scissors", "a pair of scissors" and "some scissors" for no.1
I would also use "couldn't" for no.5, rather than can't.
Comments  
1-d, some scissors.
2-c, goods are.
3-a, a business.
4-a, had repaired.
5-a, can't
Students: We have free audio pronunciation exercises.
I think for 1 it should be scissors and not some scissors.
 Pemmican's reply was promoted to an answer.