er becomes increasingly scarce in decades______, water shortage will become a hot issue all over the world.

What do you think of the film- Wonderful! You_______ praise it_______ much

Wearing white can help people _______whenthey feel stressed.

It is hoped that it won’t be long thestudents aren’t burdened with so much homework

Don’t use my handkerchief to wipe the table，gentleman.—Oh, I’ m very sorry.I________clearly