By the end of last month, some latest teaching equipment ________ to some high schools in Tibet.

odanger and conflict, men tend to increase blood pressure,nervousand anxious．

Why not go to see a film ——That ____ a good idea! Let’s go.

People have come to understand _____ prevents so manyAmericans from being as happy as one might expect.

ght there would be many students in the hall,but when I got in, I found ______.