Many comic books ______ into cartoons in the past 40 years.
A.make C.are made
C.have make D.have been made
—Susan, what are the advantages of MP5 players?
—Mom, they are smaller and lighter ______ they can be carried very easily.
| A．unless | B．if | C．until | D．so that |
—Tony, could you give me a hand?
—Wait a minute.I ______.
| A．lock the door | B．will lock the door |
| C．am locking the door | D．was locking the door |
The story of Tom Sawyer ______ in Missouri, America, in the 19th century.
| A．had happened | B．was happening |
| C．has happened | D．happened |
—What do you think of these two books?
—______ of them are interesting.And I’ve read them several times.
| A．Both | B．Neither | C．None | D．Either |