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1. I can't imagine what would happen to the world if [humans/human beings] were able to teleport [to/into] the future.

2. The [alarm of the] car on the street in front of my house has been blaring since three in the morning.

3. My ride [hasn't arrived/ is not here] yet.

4. They are in the house playing poker while waiting for their pizza [to arrive]

5. Most [of the] households in the US have [a ] annual income of thirty thousand [and above/or more].

Please correct my sentences both the braketted ones and none.

Thanks in advance!
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1. I can't imagine what would happen to the world if [humans/human beings] were able to teleport [to/into] the future. -- all OK

2. The [alarm in the] car on the street in front of my house has been blaring since three in the morning.

3. My ride [hasn't arrived/ is not here] yet.-- all OK

4. They are in the house playing poker while waiting for their pizza [to arrive] -- OK

5. Most [of the] households in the US have annual incomes of thirty thousand [and above/or more]. -- the singular is possible, but does not ring so prettily
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Thanks Mister Micawber.

2. The [alarm in the] car on the street in front of my house has been blaring since three in the morning. why does 'alarm of the' sound wrong to you? Also, what does it sound to you if the sentence obmits 'alarm in the' as follows?

The car on the street in front of my house has been blaring since three in the morning.

Also, is it OK to say Most households in the US ?
. Why does 'alarm of the' sound wrong to you? -- The use of the 'of' possessive is not as popular with natives as it is with ESLs

Also, what does it sound to you if the sentence obmits 'alarm in the' ?--
Distinctly odd; it sounds as if the car's horn is stuck and blaring, perhaps.
Also, is it OK to say Most households in the US ? -- Yes indeed.