21.How shall we__________with this problem?
A. manage
B. face
C. deal
D. control
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22.The boy__________round the corner. And I couldn’t see him.
A. appeared
B. disappointed
C. discovered
D. disappeared
23.In__________, everyone has his own advantage and disadvantage.
A. variety
B. reality
C. facts
D. prize
24.The machine is run on__________power.
A. solar
B. inventive
C. accurate
D. painful
25.The children played outside in the__________.
A. sunny
B. shine
C. sunshine
D. light