1.which city do you live ——Beijing or manling(in. on. at. )2.It's time ——class. (for. with. in. )3.my pen is lost ,I thi

问题描述:

1.which city do you live ——Beijing or manling(in. on. at. )2.It's time ——class. (for. with. in. )3.my pen is lost ,I think ,I must buy a new —(it.one)

in for one