Everyone in the village knew him, so we had _______ his house.

.As reported in the essay by Prof. Brown, it is only in the most difficult circumstances ________ a man’s abilities are fully tested.

You’d better leave, because it’s dangerous here. [ ]

I like flowers. I hope to study at a school ____ many flowers and trees in it. [ ]

_____ April 14, many people in Yu Shu lost their lives _____ the earthquake. [ ]