Is Mr Hu in the reading room?—No, he _______be there. He has gone to Tianjin.

I’m thirsty, Steven. Please pass ____ a bottle of water.

. I ____ walking in the garden ____ watching TV in the room.

Where ________ you last night? I called you, but got no answer.—Sorry. I ________ out with my brother.

I think ______ of the materials I listened to at the beginning of the exam ______ easy. — I think so.