Question

They _____ on the program for almost one week before I joined them, and now we _____ it as no good results have come out.

A．had been working; are still working

B．had worked; were still working

C．have been working; have worked

D．have worked; are still working

Answer 1

A

考查時態(tài)。根據(jù)before I joined them和for almost one week可知第一空是過去的過去，使用過去完成進行是時；根據(jù)now和句意可知第二空使用現(xiàn)在進行時。句意：在我參加他們之前他們就已經(jīng)做了幾乎一個星期了�，F(xiàn)在我們?nèi)匀辉谂�力工作，因為好的結(jié)果還沒有出來。