---The light was on all night long.
---Yes. It seemed that Mike ________. He was the last one to leave the office.
A. was to be blamed B. was to blame
C. had been blamed D. should be blamed
He became inspired when he thought about helping ordinary people _________to cholera.
A. expose B. exposing C. to expose D. exposed
At first, my new surroundings were difficult _________
A. to be tolerated B. tolerating C. to tolerate D. being tolerated
There is a system ________the waste is disposed of using the principles of ecology.
A. which B. where C. that D. at which
.Only when your identity has been checked ________.
A. you are allowed in
B. you will be allowed in
C. will you allow in
D. will you be allowed in
The Southern States wanted to ______ the Union, so the American Civil War ______.
A. get away with; broke up
B. get away from; broke up
C. break away from; broke out
D. break away from; was broken out
