1 . Tom was absent-minded in class and that was_____ he couldn’t answer the teacher’s question.

A．how

B．when

C．where

D．why

2 . My English teacher showed her care and love through inspiring comments in our exercise books. This is ________ I remember her.

A．how

B．if

C．when

D．whether

3 . I wanted to make a difference in the world somehow. That was _________ I began to learn about the Light-house Project.

A．what

B．because

C．which

D．why

4 . It is advised that one mustn’t go jogging very early in the morning; this is ________ the body temperature is lower and the bodily functions haven’t kicked in fully during this time. （用适当的词填空）

5 . The best times were ________ they had sleepovers and could sit up late talking about anything and everything and everyone. （用适当的词填空）

6 . Honestly speaking, this is ______ I disagreed ______ you.

A．what; on

B．where; on

C．what; with

D．where; with

7 . Actually, girls can be ________ they want to be just like boys, _________ it is a pilot, an astronaut, or a manager . （用适当的词填空）

8 . _____ is certain is _____ prevention is more important than treatment.

A．It, that

B．What, that

C．As, what

D．What, what

9 . This devotion and hard work is ________ we see reflected within his photos.

A．that

B．whether

C．how

D．what

10 . My topic today is            most scientists are researching.

A．that

B．where

C．when

D．what