n I was very young, I thought thatinside the radio ______ who liked talking very much

―Hurry up! Alice and Sue are waiting for you at the school gate―Oh! I thought they ________ without me

Do you want to be healthy ______. Smiling can help you stay healthy.

With no one to________in such a frightening situation，the girl felt very helpless.

May I speak to your manager Mr.Willians at five o’clock tonight?”—“I’m sorry, Mr.Williams _______ to a conference before then.”