---- 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 tryingC.will be tryingD.had tried
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B解析考查时态。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。