The air in Lanzhou is getting much _____ now than a few years ago .

I don’t know _______ / we? / Mr. White comes from?

I hope there _______ less pressure on us today.— If so, we _______ enjoy a more pleasant life.

When my mother ______ home, I was making some cards.

Lily called me ___ Friday morning and told me she was having a birthday party ___ me tomorrow. [ ]