When he was working there he caught a serious illness from _____ efforts he still suffers.
| A．which | B．that |
| C．whose | D．what |
If we earlier, we couldn’t be waiting here in a queue.
| A．have started | B．started | C．start | D．had started |
Our country should set up more national parks animals can live freely.
| A．when | B．which | C．where | D．whose |
— Can the project be finished as planned?
— Sure. it completed in time, we’ll work two more hours a day.
| A．Get | B．To get | C．Getting | D．Got |
Don’t litter in the street in Singapore, you could be arrested.
| A．or | B．and | C．but | D．so |
In the past several weeks, many cities in Northern China from heavy fogs and severe cold.
| A．had suffered | B．have been suffering | C．were suffered | D．suffered |