20.Qian Xuesen passed away on October 31,2009 ________ the age of 98,but he is a man ________ still encourages Chinese youth.( )
| A. | at;who | B. | on; who | C. | on; which | D. | at; which |
19.--Look at the picture,what will happen in 2048?
--Many houses ______ under the sea.( )
--Many houses ______ under the sea.( )
| A. | will build | B. | built | C. | will be built | D. | are building |
18.--Have you seen Jack?His mother is looking for him all the afternoon.
--No,I haven't.I am sure her mother _____ be very worried.( )
--No,I haven't.I am sure her mother _____ be very worried.( )
| A. | must | B. | may | C. | need | D. | should |
17.The exchange student from Australia is a friend of _______.She enjoyed ______ at the Art Festival held in Beijing yesterday.( )
| A. | me;herself | B. | mine; hers | C. | mine; herself | D. | me; hers |
16.He likes Sunday _____ in a week because it is his happiest time to play football.( )
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| A. | better | B. | well | C. | best |