Look, Sam is doing some_______in the library. ( )
to read
reading
read
-- Has your friend completed his design?-- Not yet. He ________ on it last night.
She to an English program while her parents TV.
—I think the magic from Liu Qian was the best program last night.—Oh, it’s a pity. I _______ cards with my family and missed it.
—I called you several times this afternoon. Why didn’t you answer the phone?--I’m sorry. I ________ an important meeting then.
My little sister_________ in the hall at that time yesterday.