The teacher is already standing here. Do you know when she ______?
A．comesB．came
C．is comingD．was coming
B

試題分析：句意:老師已經(jīng)站在這兒了。你知道她是什么時候來的嗎？come來，是一個動詞。根據(jù)句意可知，老師現(xiàn)在已經(jīng)站在這里了，因此來這個動作應(yīng)該是過去發(fā)生的，應(yīng)該用一般過去時，故選B。A是一般現(xiàn)在時，表示經(jīng)常性或習慣性的動作；C是現(xiàn)在進行時，表示此刻正在發(fā)生的事情；D是過去進行時，表示過去某時正在發(fā)生的動作。
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