I wish I ______what was going to happen.
A. knew
B. know
C. have known
D. will know
查看答案
Without electricity, human life ______quite difficult today.
A. would be
B. be
C. would have been
D. will be
It is obligatory that every child ______ their parents.
A. looks after
B. looked after
C. must look after
D. should look after
By the end of this year, all the tasks________.
A. have completed
B. will completed
C. will be completed
D. will have been completed
Mr. Bush preferred_______ heavier work to do.
A. to be given
B. to have given
C. to be giving
D. having given