Choose the best answer A, B, C or D to complete the sentences:
1. New York is an__________ city with many skyscrapers.
A. exciting B. excited C. interested D. unpopular
2. His father might__________ to Australia for his holiday.
A. went B. going C. goes D. go
3. Peter stayed at home__________ he was ill.
A. but B. so C. because D. and
4. “Let’s go fishing.”- “__________ don’t we go fishing?”
A. What B. Why C. When D. How
5. Robots won’t take care__________ children.
A. of B. after C. on D. off
6. __________ pollution causes breathing problem.
A. Water B. Noise C. Air D. Deforestation