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【題目】Frank, where have you been? We _____ you since 2 o’clock.

A. have been waiting for B. are waiting for

C. had waited for D. waited for

【答案】A

【解析】

試題分析：考查動詞的時態(tài)。句意：弗蘭克，你去哪了？自從兩點我們就在等你。根據since 2 o’clock自從兩點可知用現在完成時，這個動作一直在持續(xù)，故用現在完成進行時；

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