At last our head teacher ______ who broke the window of the classroom.

Waiter, $ 20 for dinner, right?— I’m afraid $ 25, sir, for drinks are ________.

The passengers’ (乘客) families were to keep calm as soon as they heard the bad news.

Li Ming is in poor health.He should pay more attention ________ exercise.[ ]

How would you likeif you didn’t see me for two or three days?