4 c и d верные
5 b
6 to work with mercury is dangerous
1.is raining 2 will come
3. Have built has came, spoke
5. Is working
6. Are you learning
7. Am sorry
8. Didn't prepare
9.was
11 didn't know
12. Came, has arrived
13. Ard hurrying
Nick lives in small house.
The house is small but lovely
The house is very quiet
There is not much furniture in it
It is near London
Nick and his father often go by car