When ______ you ____ to see your grandpa—Last weekend.

The fact that so many people still smoke in public places________ that we may need a nationwide campaign ________ awareness of the risks of smoking.

Fur coats are good means to ______ people from frost bites in cold winter.

The newly-published book is written _________ for children, which is also popular with most parents

You should respect your teammates and be of their feelings when working in a team.