It used to be thought _____ the Earth was flat.
| A．as |
| B．when |
| C．since |
| D．that |
______ he did was quite right.
| A．That | B．Which | C．What | D．Who |
His younger sister is often made to cry by him, but this time she made him ______.
| A．crying | B．cry | C．to cry | D．cries |
Most of us think ______ important to know how to get well along with others.
| A．it | B．不填 | C．that | D．this |
More and more foreigners are working in China, ______?
| A．are they | B．aren’t they | C．do they | D．don’t they |
The day before yesterday, I ______ one of my old friends in the street.
| A．meet | B．met | C．will meet | D．have met |