The athlete fell off his bike when he _____ down the hill.
| A．cycled | B．was cycling | C．had cycled | D．is cycling |
He failed in the exam, ______ proves that he wasn’t working hard enough.
| A．which | B．what | C．it | D．that |
The girl got herself into a serious situation ______ she was likely to lose control over the bike.
| A．when | B．where | C．which | D．who |
The old lady, ______ had been killed in the war, was given help by the local government.
| A．all her children | B．all of her children |
| C．all of whose children | D．whose all children |
There are hundreds of islands ______ the coast Fujian, the biggest of ______ is not far from the main land.
| A．on; which | B．off; them |
| C．off; which | D．on; them |
It was in the lab _____ was taken charge of by Professor Zhang ______ they did the experiment .
| A．where; that | B．which; where |
| C．that; where | D．which; that |