1 . ––The small restaurant is always crowded in every part.
––That’s ______ it has a unique dining environment and quite a few wonderful dishes.

A．why	B．because
C．where	D．when

2 . （2018· 北京）This is _________ my father has taught me—to always face difficulties and hope for the best.

A．how	B．which
C．that	D．what

3 . An accident happened on the main road. That is ______ traffic seemed to slow suddenly.

A．why	B．how
C．when	D．what

4 . The last time we had great fun was __________ we were visiting the Water Park.

A．where

B．how

C．when

D．why

5 . The best moment for the football star was _____________ he scored the winning goal.

A．where	B．when
C．how	D．why

6 . ______ I’m concerned about most is ______ we can collect a huge amount of money in such a short time after the war.

A．Why; because	B．What; how
C．That; that	D．What; if

7 . Self-confidence is a kind of quality and that is            it takes to do everything well.

A．why	B．that
C．what	D．which

8 . (2015·安徽)A ship in harbor is safe, but that’s not _____________ ships are built for.

A．what	B．whom
C．why	D．when

9 . Energy, passion and a burning desire are, you see, ________ true learning takes.

A．that	B．what
C．how	D．which

10 . —I rang you at about nine，but there was no reply．
—Oh，that was probably        I was seeing the doctor．

A．why

B．when

C．what

D．that