---- ________ class are you having?     ---- Math.

— Have you 　　　 watched any of James Cameron’s movies before? — Yes. I like his movies. Both Avatar and Titanic are my favourites.

—Where is your uncle?—He _____ to South Africa on business. He has ______ there twice.

Cheer up . Nothing is _________ .

Look out! Can you see some boy students ____ basketball?