When it miaowed, it _________ a whisper.
—What do you usually do in the morning? —I often practice ________ English. A.speak B.to speak C.speaking
He has to be ________ bed ________ nine o’clock.
I have ________ homework to do this evening.
—Dad,must we wait until the light becomes green? —Yes,I’m afraid we ________.That’s the traffic rule.
—It is rather cold here.Shall we light a fire(点火)? —No,you ________,because things here are easy to catch fire.