问题

Jack, you swim— Yes, I can.
A:can
B:may
C:need
D:must;
B:may
C:need
D:must;
正确答案是:
同类题型
For miles around me there was nothing but a desert, without a single plant or tree ______
Maybe money is important to us, but it doesn’tmean ___________, I think.
It was not until midnight they reached the camp site.
(2013·安庆模拟)So far, what we have done is destroying the earth; only by changing we live we save it.