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Why not take up some outdoor sports to relax ______ office work? It will also help keep you healthy.

New research has found that animals have memories, too —     , they might be much cleverer than we thought.

Keeping a foreign pet is dangerous, as the owner might be infected ________ the diseases brought along with the animal.

Nothing is more important than health, so it is unwise to build up our business ________ our health.

Western journalists claim to be loyal     the truth only． But they never bothered to question the truthfulness of the Dalai Lama’s claims．

Although the machine is _______, you need to use it correctly and safely.

I haven’t been aware           his attitude          my promation.

I must ask you accompany me              the police station.

I congratulated them all             their results.

The teacher divided the whole class, which consisted ______ 40 students, into four groups.