—She may not be free today.
—___, we’ll have to put the meeting off.
| A．If may | B．If not |
| C．If she may not | D．If she may not be free today. |
Helen always helps her mother even though going to school ____ most of her day.
| A．takes up | B．makes up | C．saves up | D．puts up |
It is sad to see him go but it won’t make a(n) ___ to the way we conduct our affairs.
| A．importance | B．difference | C．effect | D．influence |
We were dancing to ____ music when all of ____ sudden the power went out and we were left in the dark.
| A．the; a | B．the; / | C． a; / | D．/; the |
Great changes have taken place in my home town. It’s no longer ______ it was ten years ago, ______ I spent my childhood there.
| A．what, when | B．that, where | C．as, which | D．which, that |
Wherever he traveled in those days, he always _______ down what he saw and heard.
| A．writes | B．has written | C．wrote | D．had written |