Iwaswatchingtheclockallthroughthemeeting,asIhadatrain

問題詳情：

I was watching the clock all through the meeting, as I had a train ______.

A. catching                                B. caught                       C. to catch                              D. to be caught

【回答】

C

【解析】

試題分析：句意：在整個會議期間我一直在看鐘表，因為我要去趕火車。根據上文判斷出as引導原因狀語從句，Sb have sth to do 某人有某事要做（在本句中to do 由主語完成），根據句意判斷選C。

知識點：非謂語動詞

題型：選擇題