问题
选择题
—Do you know what to do in the lab, Mike?
—Oh, sorry I don’t----just _____if I could get a ticket for the Shanghai Expo.
A.wonder
B.wondered
C.wondering
D.having wondered
答案
答案:C
根据“我”回答sorry I don’t,可知“我”刚才正在想是否能买到上海世博会的票,所以用过去进行时态,故答案C。