--_________ useful invention the computer is.
--Yes, It helps us a lot.
| A．What an | B．What a |
| C．How | D．How a |
-- Be careful, _______ you will make mistakes in your exams.
--I know that, Mrs. White. One can never be too careful.
| A．and | B．or | C．nor | D．but |
We don’t know when the sports meeting ______. When it ______, please tell me .
| A．is held; will be held | B．will hold; is held |
| C．will hold; holds | D．will be held; is held |
There are many trees ______ of the road! And ______ of the trees is growing larger and larger.
| A．on both side; a number | B．on each sides; a number |
| C．on both sides; the number | D．on every side; the number |
I’ll never forget the day_____ the great writer, MoYan came to our school and gave us a speech.
| A．that | B．which |
| C．when | D．where |