Many Chinese children have to take piano lessons, but few of them have ____ in it.

Young people who have got jobs may realize university lessons can’t be the only preparation for all of the situations____appear in the working world.

Look， there ____________ a pair of beautiful shoes in the shop. —Oh， yes. You can try on.

One of our rules is that every student wear the school uniform while at school.

So hard __________ in the past few months that he has made great progress in English–I can see that, only a few mistakes he made in this exam