問兩個英語語法題 分詞和不定式的
1.___ in the queue for half an hour,Tom suddenly realized that he had left his wallet at home.
A.To wait B.Have waited C.Having waited D.To have waited
這個題講下先怎么排除含有不定式（或分詞）的選項 然后再講下CD兩項 這兩項都有表示動作發(fā)生在謂語動詞表示的動作之前的含義 該如何選擇?
2.The bank is reported in the local newspaper ___ in broad daylight yesterday.
A.being robbed B.having been robbed C.to have been robbed D.robbed
A表示正在被偷 排除很容易 主要是BCD分不清該怎么選 特別是BC兩項 希望講細(xì)點 讓我看見這類題都會做