Mum，Harry Potter is my favorite book．I________it three times already．
A．read
B．am reading
C．will read
D．have read
Do you know that the Earth is home to________animals．
A．million
B．millions
C．millions of
D．million of
—Your classroom looks bright and tidy．
—It________after school every day．
A．cleaned
B．is cleaned
C．cleans
D．was cleaned
They haven’t found MH370________．
A．already
B．just
C．yet
—If we don’t________，we may miss the beginning of the concert．
—Well．let’s take a taxi to get there．It can save us much time．
A．hurry up
B．grow up
C．stay up
D．use up
The box is very heavy．It is full________old books and magazines．
A．with
B．of
C．for
D．in
