I just wonder ________ that makes him so excited.
| A．why it is | B．what is it |
| C．how it is | D．what it is |
There are more opportunities for disabled people to make______ contribution to______ society.
| A．a, the | B．a, / | C．/, the | D．the, a |
---What’s wrong with my stomach?
---There is nothing serious; you can __________.
| A．take it easy | B．take your time | C．take it seriously | D．take risks |
It was the training _____ he had as a young man _____ made him such a good engineer.
| A．what; that | B．that; what | C．that; which | D．which; that |
It was not until he came back _____ he knew the police were looking for him.
| A．which | B．since | C．that | D．before |
I hate _____ when the light turns red and the people don’t move until it is about to turn green again.
| A．it | B．that | C．these | D．them |