Supposing this ship ______ , do you think there would be enough life jackets for all the passengers?
A. was sinking
B. has sunk
C. were to sink
D. sunk
查看答案
The insects would devour all our crops and kill our flocks and herds, if ______ for the protection we get from insect-eating animals.
A. it is not
B. it were not
C. were it not
D. they were not
The teacher suggested that each student ______ a plan for the vacation.
A. made
B. make
C. makes
D. will make
After the way she treated you, if I ______ in your place, I would feel hurt.
A. be
B. am
C. was
D. were
The idea is that the nation ______ an unmanned spacecraft to explore the planet first.
A. sent
B. sends
C. send
D. must send