—You see, I’m poor in maths, you are not good at English, and... 
— That’s ____ we should help each other.
| A．when | B．where | C．how | D．what |
She may have missed the train, ______ she won’t arrive for another hour.
| A．in which case | B．in the case | C．in any case | D．in that case |
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 |