––Tom is ill. He is now. –– I’m sorry to hear that. Let’s go to to see him.
Yesterday evening I was playing the piano________the doorbell rang. A.when B.before C.while
Tony________TV when his mother came in.
I saw him in the library yesterday.He________a book at that moment.
(北京)—What were you doing when we were playing basketball yesterday afternoon? —I________the classroom.
My alarm didn’t________.So I woke up late.