问题

John has two brothers, but either ____out of worknow
A:to have studied
B:to study
C:to be studying
D:to have been studying
B:to study
C:to be studying
D:to have been studying
正确答案是:
同类题型
members of a team perform better, the trainer first of all has to knowtheir ______ and weaknesses
_____ are good friends. We often help each other.
There’s no _____ in arguing with each other over this matter It depends on the weather
Your brother _____be hungry now—he had lunch only two hours ago! [ ]