We _____ more than 1,200 English words already, do you know?

What should I do, doctor? –________ healthy, you should take more exercise.

At this moment , John ______ lunch.

Hello, this is Jack. Mary I speak to Tom? — Sorry, he isn’t in at the moment. If he back, I’II ask him to call you back.

Dream of the Red Chamber is _____ worth _____ because we can learn a lot about the noble families in the feudal society.