We’ll be back for our school’s _____ anniversary ceremony(周年庆典). –I see. That means you’ll have a get-together with your classmates in ___ years.

Have you been here before?— Yes. This is the third time that I ______ to Shanghai.

Ia letter from him since he left.

David talked with a friend of ________ on the Internet for a long time yesterday.

We often go home _________ 4:30 _________ the afternoon.[ ]