---- 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 tryingB．have been trying
C．will be trying D．had tried
B
考查時(shí)態(tài)。由for the last 5 weeks可知用完成時(shí)，因此排除A、C，再由上文“你還沒(méi)有弄到化學(xué)教科書(shū)”，可以推測(cè)we一直到目前都在想辦法，因此用現(xiàn)在完成進(jìn)行時(shí)。for/in the last /past+段時(shí)間，常與完成時(shí)態(tài)連用，而in the past則用過(guò)去式。
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