Latest researches show children with high levels of air pollution during their first
year of life run a greater risk of developing certain diseases．
| A．to be associated | B．being associated |
| C．having been associated | D．associated |
Helping others is a habit, _______ you can learn even at an early age.
| A．it | B．that | C．what | D．one |
_______, the weather turned out to be very hot that day.
| A．It was said in the newspaper |
| B．As was reported on the radio |
| C．Just like the weather report says |
| D．It so happened as you told me |
There are two small rooms in the house, ______ serves as a kitchen
| A．the smaller of which | B．the smallest of which |
| C．the smaller of them | D．the smaller one |
The result is not the same ______ they had expected, ______ was rather disappointing.
| A．which; as | B．as; that |
| C．that; which | D．as; which |
Although he was in poor health, Robert succeeded other more famous engineers failed．
| A．which | B．that | C．what | D．where |