1. ## mutiple choice

1. The space shutle can travel at seven miles………. second.
A. every B. a C. for a D. each
I chose A but the answer is D. I don't find any difference between "each" and "every"
2. ……. for the fact that he was working abroad, he would have helped with the project.
I did correct in this question (answer:C) but I found no difference between "Hadn't it been" and "If it hadn't been"

2. ## Re: mutiple choice

1. The space shutle can travel at seven miles………. second.
A. every B. a C. for a D. each
I chose A but the answer is D. I don't find any difference between "each" and "every"

san.
I would naturally say "... can travel at seven miles a second".
I would be more likely to say "can travel seven miles every second" (no "at"), rather than "can travel seven miles each second" or "at seven miles each second".

So, I disagree with the answer given. Someone else may have a different opinion.

In your other question I agree with the answer given but I'll leave it for a teacher to explain clearly.

not a teacher

3. ## Re: mutiple choice

1. I would have said "per" which is not a choice. B, D, A in that order otherwise.

2. "If" is needed -- trying reversing the two major parts of the sentence without If. :)

Not a teacher

4. ## Re: mutiple choice

Originally Posted by san2612
2. ……. for the fact that he was working abroad, he would have helped with the project.
I did correct in this question (answer:C) but I found no difference between "Hadn't it been" and "If it hadn't been"
We could, formally write, "Had it not been". In these inverted constructions without if we do not use contracted forms.

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