请教单选,谢谢1.Afteryouhaveusedthedict
1.After you have us the dictionary ,please put back ________it belongs.A.where which 2.Before ______to the college ,he had to go through an examination. A being admitted B.having been admitted 这里的before 是介词还是连词呢,我们不是说,事物先后发生用have 来表示吗, 3.The new
A,A,C 1) 选A 2) A,是介词,后面是动名词的被动式。 3) 注意前面的 be,这里要用被动语态,只能选C.