Don’t ____ too late , or you will feel tired in class. —I won’t , mum. Good night.

Parents should see to it _______ their children formthe habit of brushing their teeth every day

If this medicine is good for anything ________,it is good for heart trouble[ ]

The two girls had been talking in ________ low voice all ________ time during the meeting, which upset the manager.

Our teacher asked us to write a(n)aboutsomething interesting happening in the summer holidays.