In our school libray,there____a number of books on science and the number of them_____growing larger and larger. A.is;are B.are;is C.have;is
—Jack, have you finished your homework _____? —Yes. I’ve _______ finished it.
Jenny is talking _____ in class. Please tell her to stop.
_____? We’re going sightseeing.
I want to buy a bike. At last I decided ____ a black one.
Where____ he ____ for his next vacation?