----Mum, what are you cooking? It smells so _______.----Oh, cheese cake, of course!I know you enjoy _______ it.
The thieves ran away at once when the burglar alarm(防盗报警器)________.
—Did you see Mr Smith when you were in France?—No.When I________France,he________to China.
He told us that he________the letters in the morning.
By nine o’clock yesterday evening,we________our work.
We________four thousand new words by the end of last year.