The air pollution is serious, ________ we must try our best to reduce it.
A. so B. or C. if
I enjoy the popular dance “hip-hop”, but ____ my father ____ my mother likes it.
| A．both …and | B．not only … but also |
| C．either … or | D．neither… nor |
Eddie was sleeping deeply___________Millie was watching TV.
| A．when | B．as | C．while | D．after |
— Which colour do you prefer?
— ______ blue ______ white is OK. They are both my favourites.
| A．Both; and | B．Neither; nor |
| C．Not; but | D．Either; or |
— Sandy, I’m going to have ballet lessons. What do you think of it?
— You? It’s no use trying to learn ballet ______ you have a gift for music.
| A．until | B．unless | C．before | D．since |
We will go bike riding it rains this afternoon.
| A．if | B．since | C．as soon as | D．unless |
I didn’t know he came back I met him in the street.
| A．since | B．when | C．until | D．after |
We don’t understand the passage ______ there are few new words in it.
| A．and | B．if | C．though | D．Because |
The art club is for members only. You can’t go in ____ you are a member.
| A．unless | B．because | C．if | D．though |
----Would you like to go shopping with me today or tomorrow?
----________ , I have nothing to do.
| A．Neither | B．Either | C．None | D．All |
Trees were planted on ______ sides of the new road last year. These trees flowered this year for the first time.
| A．both | B．either | C．neither | D．each |
Thomas Edison is known _____inventions______ a great inventor.
| A．to, as | B．for , as |
| C．as, to | D．to, for |
silk feels soft and cool, it is difficult to take good care of.
| A．Because | B．Though | C．Since | D．As |
There are many trees on side of the street, and of the trees is still growing.
| A．both； the number | B．either； the number |
| C．both； a number | D．either； a number |
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