Choose the best option

Choose the best option A, B, C or D to complete each question below. (1,5pts)
1. Water in the lake has made the fish die.
A. pollution B. pollute C. polluted D. polluting
2. If we recycle more, we the Earth.
A. help B. would help C. helping D. will help
3. The film.......... before I ................to the cinema last night. 
A. had started/ came B. started had come C. had started / come D. was starting/came
4.The government has declared a state of following the earthquake.
A. accident B. situation C. extension D. emergency 
5. Heavy storm has caused ............. in many parts of the country.
A. storm B. floods C. typhoon D. drought
6. English is an ......... language in Singapore
A. office B. official C. officer D. officially