The room is very dirty today.It's hard——.A.cleaning B.to clean it C.to learning D.to clean求速度The room is very dirty today.It's hard——.A.cleaning B.to clean it C.to learning D.to clean

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Theroomisverydirtytoday.It''shard——.A.cleaningB.tocleanitC.tolearningD.toclean求速度Theroomisverydirtyto

The room is very dirty today.It's hard——.A.cleaning B.to clean it C.to learning D.to clean求速度The room is very dirty today.It's hard——.A.cleaning B.to clean it C.to learning D.to clean
The room is very dirty today.It's hard——.A.cleaning B.to clean it C.to learning D.to clean求速度
The room is very dirty today.It's hard——.
A.cleaning B.to clean it C.to learning D.to clean

The room is very dirty today.It's hard——.A.cleaning B.to clean it C.to learning D.to clean求速度The room is very dirty today.It's hard——.A.cleaning B.to clean it C.to learning D.to clean
B.意为to clean it is hard