1.
If it ________ too much trouble, I’d love a cup of tea.
A) isn’t
B) wasn’t
C) weren’t
D) hadn’t been
2.
My sister’s professor had her ________ her paper many times before allowing her to present it to the committee.
A) rewritten
B) to rewrite
C) rewrite
D) rewriting
3.
silver is the best conductor of electricity, copper ________ it closely.
A) followed
B) following
C) to follow
D) being followed
4.
They are considering ________ before the prices go up.
A) of buying the house
B) with buying the house
C) buying the house
D) to buy the house

1. A

2. C

3. B

4. C