Has John ____ Beijing _____ Shanghai?
Can I come this afternoon or tomorrow morning?–is OK.I’m free today and tomorrow.
She_________ Tibet the day before yesterday.
Now parents feel they can’t help______reading stories suitable for their children, so sometimes they can’t help but______ to experts for advice.
Excuse me. Could you wake me up when my friend _______here?—Of course. But we still don’t know when your friend ______ here.