Amy was reading a book _____ I came in.
A. when B. while C. because
I was late today because my alarm clock didn’t____
A. run off B. go off C. give out
My uncle ____ books in the room at this time yesterday.
A. was seeing B. is reading C. was reading
—I feel really tired.. —______
A. Lucky you!
B. You’d better work harder.
C. Why not go and have a rest?
He didn’t come back____ 7 o’clock last night.
A．till B. until C. at
We’ll stay at home if it _______ tomorrow.
A. will rain B. rains C. rained
