Lin Hai and Dave __ his good friends.

The university estimates that living expenses for international students________around $8,450 a year，which________a burden for some of them. (2013·湖南，33)

It is the test system, _____ the teachers, that is to blame for the heavy burden of middle school students nowadays

Dale, are you having a good time ______ the village

We didn’t find________ in the picture.