1 . ________ you want to go to university, work as hard as you can.

A．Since

B．After

C．Though

D．Unless

2 . ________ traditional Chinese characters (繁体字) are a great part of Chinese culture, we must keep them alive.

A．After

B．Although

C．Since

3 . S________ we are friends, we often help with each other.

4 . —It’s said that Beijing Duck is very delicious.
—Well, ________ we are here, why not have a try?

A．though

B．unless

C．since

D．before

5 . ______ you can’t work out the problem, perhaps you need to ask your classmates for help.

A．Unless

B．Though

C．Since

6 . _______ you are unable to answer it, perhaps we should ask someone else.

A．Unless

B．Since

C．Whether

7 . Since they live in one house with their parents, they should know that everyone should do their parts in keeping it clean and tidy.
________________________________。

8 . Let’s do some reading, s_________ we have thirty minutes to wait for the train.

9 . S__________ your like meat very much, let’s order some beef and pork.

10 . ________ (既然) we still have a few minutes to wait for the train, let’s have a cup of coffee.