Up to now, they _______enough money for students who can’t afford to go to school.
A.a(chǎn)re raisingB.have been raising
C.have raised D.had raised
C

試題分析:考查時態(tài)。本題的關(guān)鍵詞是句中的up to now,直到現(xiàn)在;該時間狀語與現(xiàn)在完成時使用。句意:直到現(xiàn)在,他們已經(jīng)湊集到了足夠的錢來幫助那些無法上學的孩子。故C正確。
點評:時態(tài)題的考查關(guān)鍵是抓住句子的上下文含義和句中的時間狀語。要根據(jù)時間狀語來選擇合適的時態(tài),在平時的學習中要注意積累有關(guān)時態(tài)的用法和各種時態(tài)的特殊之處。如since, so far等經(jīng)常與現(xiàn)在完成時連用。在條件狀語從句中用一般現(xiàn)在時代替將來時等等。
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