When you are free,please for tea .OK.I will.A.drop by B.drop back C.drop off D.drop down 理由说下

问题描述:

When you are free,please for tea .OK.I will.A.drop by B.drop back C.drop off D.drop down 理由说下
When you are free,please______ for tea .

选A顺便来访
B掉回
C掉落
D突然下来
当你有空的时候,请顺便来喝茶.