It’s necessary for you _____ exercise every day.
I have ________ rules in my home.We have ________ homework to do today.
Remember ________ off the lights when you leave the room,please.A.to turnB.turningC.turn
—What’s your teacher like?—She is always strict ________ us.A.inB.withC.to
—What do you usually do in the morning?—I often practice ________ English.A.speakB.to speakC.speaking
He has to be ________ bed ________ nine o’clock.