1 . —I hope I can take part in the game show Who is Still Standing and win something.
—Stop daydreaming. You will win nothing ________ you spend a few months preparing for it.

A．since

B．unless

C．if

D．because

2 .          , you can turn to me for help.

A．However the problem is difficult	B．No matter how difficult is the problem
C．No matter how is difficult the problem	D．However difficult the problem is

3 . ______ I agree with you, I don’t think your solution is the best.

A．If

B．Since

C．While

D．As

4 . ________in everyday life consumers have seen lots of successful examples of advertisements like Kodak, Nike, Coca-Cola, and McDonald’s, there are still some examples that do not reach the expected goal.

A．As

B．Because

C．In addition

D．While

5 . You’ll never speak English well________you often practice it.

A．unless

B．if

C．or

D．otherwise

6 . ______I am at home, my mother keeps pressing me to study all the time.

A．Because

B．When

C．Though

D．Until

7 . ________ everyone has left the party, we need to start cleaning.

A．Before

B．Whenever

C．Now that

D．In case