Some questions

[belly_ttt]

1) The committee changed its recommendations because__ the privous ones were too difficult for most people to follow
a) that felt that
b) it felt that
--> The answer is a but I don't understand why it's not the other

2) Attending every class is important__ in college
a) for the sucess
b) for success
The answer is b but I don't know why it's not a

3" I'm tired of taking the bus to work every day"
"I wish I had a car so that I___ give you a ride"
a) can
b) could
---> The answer is b but I don't understand why it's not a

4) She worked _______ day and read books at night
a) during the
b) at
--> The answer is a, I don't understand why it's not b since I think this sentence is a parallel sentence, so if we use a we must use during the night at the following clause

 

[David L.]

1) The committee changed its recommendations because__ the privous ones were too difficult for most people to follow
a) that felt that - are you sure this isn't "they felt that"?
b) it felt that
--> The answer is a but I don't understand why it's not the other

If the two possible answers are now:
a: they felt that
b it felt that
Which do you think is correct and why?

2) Attending every class is important__ in college
a) for the sucess
b) for success
The answer is b but I don't know why it's not a
Why do we use the definite article?

3" I'm tired of taking the bus to work every day"
"I wish I had a car so that I___ give you a ride"
a) can
b) could
---> The answer is b but I don't understand why it's not a

]So, if I asked, "Can you give me a lift to work tomorrow?" you would say "no, I don't have a car. If I had a car, then I(what)?"

4) She worked _______ day and read books at night
a) during the
b) at
--> The answer is a, I don't understand why it's not b since I think this sentence is a parallel sentence, so if we use 'a' we must use 'during the night' as the following clause.
Can you give me another sentence using 'at day' in it?

 

[belly_ttt]

Thanks,
I'm with you. My answer book must have been wrong. But in sentence 4, I think b is the correct answer while the book persist in a