4.When your friends are _______,you should be ________ about them and talk with them so that they will feel better.( )
A. | upset,concerned | B. | excited,tired | ||
C. | grateful,fond | D. | frightened,sincere |
3.Among the competitors,there are three little girls, is Mary.( )
A. | the smallest of whom | B. | the smaller of whom | ||
C. | the smallest of them | D. | the smallest one |
2.It's a shame ______ able to give them any advice.( )
A. | not to have been | B. | to have not been | ||
C. | to have been not | D. | to not have been |
1.China's population is expected to increase to about 1.5billion in 2040,_____ it will start to decline slowly.( )
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A. | where | B. | which | C. | after which | D. | on which |