一I’m sure  Andrew will win the first prize in the final.
一I think so.He  for it for months.
A.is preparingB.was preparing
C.has been preparingD.had been preparing
C
句意:——我相信Andrew最后會(huì)得第一名的!乙策@樣認(rèn)為。他已經(jīng)準(zhǔn)備了好幾個(gè)月。for month經(jīng)常和完成時(shí)連用。先排除AB,他做準(zhǔn)備是從過(guò)去一直到現(xiàn)在而且還可能會(huì)持續(xù)下去。故用現(xiàn)在完成進(jìn)行時(shí)。
點(diǎn)評(píng):時(shí)態(tài)的考查要注意兩方面:一是時(shí)間狀語(yǔ),二是上下文的語(yǔ)境。
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