—Excuse me, where are we going to have our class meeting?—I’m not sure. Ask Li Hua, please. He _________ know.
It ______ that he has been ill for a long time.
I spent half an hour ___________ my homework.
My father gave up ________ at last.
I haven’t seen the movie and my brother hasn’t _______.
There is ______milk in the bottle. Let’s go to buy some.