问题
选择题
---- You haven’t got the textbook for my chemistry course yet.
---- I know, and we _____ to get it for the last 5 weeks.
A．will have been trying
B．have been trying
C．will be trying
D．had tried
答案
答案：B
考查时态。由for the last 5 weeks可知用完成时，因此排除A、C，再由上文“你还没有弄到化学教科书”，可以推测we一直到目前都在想办法，因此用现在完成进行时。for/in the last /past+段时间，常与完成时态连用，而in the past则用过去式。