How many Chinese astronauts ______ into space since 2003—-Twelve , including two women.

We should do more such exercises in the future, I think, ____ we did yesterday.

How much salt did you put in the soup一 Oh, sorry! . I forgot.

They did it all____ friendship

There’s no time to waste.—-OK. But I’m afraid that ______ I work around the clock, I can’t catch up with those straight A students.