---- I hear that Jason is planning to buy a car.
---- I know. By next month, he _     enough for a used one.
A．will have savedB．will be savingC．has savedD．saves
A

試題分析：本題考查時態(tài)的用法，根據(jù)時間狀語by next time,可以判斷出要使用將來完成時態(tài)，句意：--我聽說Jason計劃買個汽車。--我知道，到下個月為止，他將可以攢下可以買輛舊車的。故答案為A。
點評：介詞by+時間做時間狀語時，要用相應(yīng)的過去時，如by+過去時，用過去完成時，by+將來時，用將來完成時，學生可能不清楚將來完成時態(tài)的用法而選擇了C。
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