30、Alice received an invitation from her boss, ______________ came as a surprise.

　　 A. it　　　　　 B. that　　　 C. which　　 D. he

29、It was in Beihai Park ____they made a date for the first time _____the old couple

told us their love story.

A.where;that　　 B.that;that　　 C.where;when　　 D.that;when

28、Children shouldn’t go swimming in the lake ____ they are with their parent.

　　 A．until　　　　　 B．unless　　　　 C．if not　　　 　 D．before

27、While reading a book , _____ . A. the girl came in　　　　　　　 B. my mother was cooking C. I heard a knock on the door　　 D. the doorbell rang

26、Do you know the difficulty he has　　 　　what eco-travel means?

A. understand　　 B. understood　　 C. to understand　　 D. understanding

25、Mr Green expressed the hope ___he could have another chance to come to visit China again the next year . A.what　　　 B. that　　　 C. when　　　 D.which

24、At least 100 persons were killed in the plane crash, ____ 5 children.

　　 A．included　 　B．including　　 C．contained　 D．containing

23、I really don't know ____ I had my money stolen . A. when was it that 　　　B. that it was that C. where it was that 　　D. it was where that

22、Can you easily make yourself _______ in English . A. understand B. understood C. to understand D. being understood

21、He sat in the hall , ___ to the speaker attentively . A. listen B. hear C. listening D. listened