I’ve become good friends with several of the students ___helped me in the English speech contest last year.
| A．who | B．where | C．when | D．which |
Wind power units are placed ______ there is a lot of wind.
| A．where | B．when | C．which | D．that |
Recently, there a boom in population movements.
| A．is | B．was | C．has been | D．had been |
______developing countries need to do is to stop poverty.
| A．How | B．That | C．Which | D．What |
That's the best way you thought of _______ into dangerous areas.
| A．stopping people to get | B．to stop people getting |
| C．keeping people getting | D．preventing people in getting |
— I’m sure Andy will win the first prize in the coming English Speech Contest.
— There is no doubt about it. He ________ for it for months.
| A．is preparing | B．was preparing |
| C．has been preparing | D．will prepare |