------I can’t wait to go to your party. ________ my friend Susan come?------ Of course. She is always welcome.

—You look so tired. —Yes. The loud noise upstairs stopped me        the whole night.

________ you happen to see Mary, would you please ask her to come here?

There is no need ______ because Mr. Smith is still sleeping.

 If Doric continues doing things like that, he ______ face the music one day！