9.This farm tool needs _.A.repair B.to repair C.repairing D.repairs 说明原因The little boy is dirty from head to foot because he _____ in the mud all morning.A has played B is playing C has been playing D was playing 为什么答案是C不是A

问题描述:

9.This farm tool needs _.A.repair B.to repair C.repairing D.repairs 说明原因
The little boy is dirty from head to foot because
he _____ in the mud all morning.
A has played B is playing
C has been playing D was playing
为什么答案是C不是A