His work _________ have been completed; otherwise, he wouldn't be enjoying himself on the beach.
A. should
B. must
C. can't
D. shouldn't
He wondered __________ the pyramids were built.
A. what
B. that
C. if
D. how
He insisted that he __________ and that he ________ nothing wrong.
A. be set free; should do
B. set free; should do
C. should set free; had done
D. be set free; had done
---It's reported__________the new underground line has been completed.
---Yes, but it hasn't been made clear ________ it's to be opened to traffic.
A. when; when
B. that; that
C. when; that
D. that; when
Not until ________did he leave.
A. I came back
B. did I come back
C. came back I
D. came I back
I _________ in the countryside, but these days I________ in the city.
A. used to live; am used to live
B. was used to living; used to live
C. was used to live; used to live
D. used to live; am used to living
