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The children decide _____ their school yard this Friday afternoon.

A.clean' Y+ @! ]! I2 P4 ^B.to clean
$ D+ ^+ W1 U4 M7 F
C.cleaning
7 B8 \4 C; @. ]; S
D.cleaned
6 Z0 E9 c4 c. c1 g

答案B

解析