The time and effort he has devoted during the past few years _____ trees in that village are nowconsidered to be very important. [ ]

My dream house would have a garden ____ I could have parties with my friends in it[ ]

The US President Obama told the students that he ______ by a single mother who were strict with him and wished him great success in his studies

Can you catch me, Mary— Yes, sir. You speak . I can follow you.

It’s said that ______of the water around the world___ polluted.