—What do you want to be when you________? —A doctor.
In our class, Andy is the __________ . He always makes everybody laugh .
---The classroom is not________ clean ______it was yesterday . ---Sorry, I forgot to clean it.
As(正如) the old ___________ goes, “Time waits for no man!”
The book isn’t _____________________. We don’t like it.
The Science Museum interests me a lot. I enjoy __________ there.