Have you ____ your key— No, I’ve ____ for it everywhere, but I can’t find it.

Children above 12 are able to take part in skiing orother activities _______for them.

“__________” “He is smart and helpful.”

In order to gain a bigger share in the international market, many state-run companies are striving ______ their products more competitive. [ ]

The plan _____ by the Chinese government ____ rejuvenating the nation by relying on science