Sally spends a lot of time ______ exercise,but Helen spends little time ______ it.A.doing,in B.to do,in C.doing,on D.to do,on
问题描述:
Sally spends a lot of time ______ exercise,but Helen spends little time ______ it.
A.doing,in B.to do,in C.doing,on D.to do,on
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