Mr Smith is good _____ his students.[ ]

If ________, please pay a visit to me and have a further discussion of the issue.

Excuse me, I want to buy some food. Where can I find a supermarket？ —I know _____ not far from here. You can easily find ________.

Listen! Someone in the next room.

My pen pal Molly ______ to Xi’an to visit me next Thursday.