1 . As we all know, it was _____ that resulted in the terrible car accident.

A．because of her carelessness	B．her being careless
C．because she was careless	D．she was so careless

2 . - Was it because of his laziness_______ he didn't do the experiment successfully?
- No, it was because of his carelessness.

A．that

B．while

C．for

D．as

3 . Could it be in the restaurant_____ you had dinner with me yesterday ______ you left your keys?

A．that; that

B．that; where

C．where; where

D．where; that

4 . Some experts believe it is the grandparents who ________ for the spoiled child.

A．are to blame	B．are to be blamed
C．should blame	D．are blamed

5 . David said that it was because of his strong interest in literature___he chose the course.

A．that	B．what
C．why	D．how

6 . It was with the help of the local guide ________   the mountain climber was rescued.

A．who	B．that
C．when	D．how

7 . --- Steven, where did you come across the famous novelist from England?
--- Believe it or not, it was in the supermarket ____ we went shopping last Sunday.

A．which	B．that
C．there	D．where

8 . It was the belief _____ Alex Haley could find his “root” in Afric______ made him decide to go to Gambia.

A．that; which

B．which; which

C．that; where

D．that; that

9 . It was in the lab ______ was taken charge of by Professor Harris _______ they did the experiment.

A．which , that

B．that, where

C．whom, that

D．which, where

10 . It was not until dark ________ he found ________ he thought was the correct way to solve the problem.

A．when; that

B．that; that

C．when; what

D．that; what