My sister met him at the Grand Theater yesterday afternoon, so he ____ your lecture.
28.Which sentence is wrong?29.
33.I don't think_____________difficult for a Chinese student to master a foreign language within five years34.
35..It's the second time you_________late this week.36.
37.It will not be__________we meet again.38.
39.It's demanded that we____________there on foot.40.