11.Along with the increasing number of the Chinese students in Australia, David Irvine,they the role of a bridge for the link-up and exchange between the two countries.( )
A. | expressed; had played | B. | expressing; have been playing | ||
C. | expressed; are playing | D. | expressed; are being played |
9.For some time now,world leaders _____ out the necessity for agreement on climate change,the world economy and African development.( )
A. | had been pointing | B. | have been pointing | ||
C. | were pointing | D. | pointed |
6.We were lucky to get out of there without running into the security guys,because there ________ real trouble( )
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A. | couldn'thavebeen | B. | weren't | ||
C. | were | D. | couldhavebeen |