Every possible means ______ to prevent the air pollution, but the sky is still not clear.

Mary broke up with me!—You____ have forgotten about the Valentine’s Day．

dollars a pair I think it’s a bit too much— If you buy three pairs, the price for eachwill to three fifty

－What did our geography teacher say－She told us that the earth around the sun.

Why are you playing computer games again， Jim————Because I ______my homework and I want to relax.