Time goes by so fast . We must never miss the chance to show love for our parents and make them _____ how much they mean to us .

 — David, your mother’s birthday is _____. Let’s think about how to celebrate it.—OK, Dad.

— Could you ______me your bike, please?— Sorry, I’m using it. You can borrow Jack’s.

Many volunteers______ food and water to the local people in Japan after the tsunami.

 – I waited there for an hour, but Jim didn’t______.