Ex. 2: Choose the most suitable preposition to fill in the blanks.
1. Many scientists are concerned_______the environmental problems today.
A. in B. on C. about D of
2. The decrease_______ air pollution was dramatic last year.
A. in B. on C. of D with
3. They were well aware_______ the problem.
A. on B. to C. of D. up
4. I’ve come _______ an idea about the new project.
A. up to B. up with C. up on D. up in
5. Radiation can lead_______ childhood cancer,
A. to B. on C. of D. in
Ex. 3: Choose the most suitable word to fill in the blanks.
1. If I _______ a lot of money, I would buy a new house.
A. have B. will have C. had D. has
2. Water pollution makes some aquatic animals _______.
A. dying B. to die C. die D. died
3. If the weather is fine, we _______ the mountain together.
A. climb B. would climb C. climbs D. will climb
4. Some local factories still continue _______ toxic waste into lakes and rivers.
A. dump B.to be dumping C. dumping D. dumped
5. Let’s_______ the topic for the upcoming presentation,
A. discuss B. discussed C. discussing D. to discuss
