21. Leaves are found on all kinds of trees, but they differ greatly ________ size and shape.(A) on(B
21．--- We need three single rooms for the first week in June.--- . The hotel’s not busy then.(A)No p
21．The Smiths don’t usually stay at hotels, but last summer they spent a few days at a very nice hot
22. The mayor has offered a reward of $ 5000 to ______ who can capture the tiger alive or dead.(A) b
23. Alan is a careful driver, but he drives ______ of my friends.(A) more carefully(B) the most care
3.I wanted to catch _____early train,but could’t get _____ride to the station.(A)an;the (B)/;the (C)
4._____fire, all exits must be kept clear.(A)In place of (B) Instead of (C)In case of (D) In spite o
24. --- Did you tidy your room?--- No, I was going to tidy my room but I ______ visitors.(A) had (B)
25. --- Guess what! I have got A for my term paper.--- Great! You ______ read widely and put a lot o
36. With the help of high technology, more and more new substances ______ in the past years.(A) disc
8.It is difficult for us to learn a lesson in life ____we’ve actually had that lesson.(A)until (B) a
37. --- How was the televised debate last night?--- Super! Rarely ______ so much media attention.(A)
38. The little boy came riding full speed down the motorway on his bicycle. ______ it was!(A) What a
9.A new _____bus service to Tianjin Airport started to operate two months ago.(A)normal (B)usual (C)