Why haven’t you posted the letter?— I _______ to but I forgot about it.[ ]

“Whatever you want, you ____ have it so long as you get the best result,” said the boss.

_______ cups of water are there on the table —Four.

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

In fact most people in that area are _______ than they were 5 years ago because of years of wars.