—I wonder why he has been acting so strange these days.
—Recent pressure at work may ______ his behavior.
| A．account for | B．make for | C．change for | D．stand for |
One of the greatest benefits of Internet friendships is that they are based on common interest ________ appearance, age or popularity.
| A．in case of | B．in the form of | C．in spite of | D．instead of |
The 2010 Shanghai World Expo is intended to achieve our common goal: ________world that is safer, cleaner and healthier than ________ one we’re living in.
| A．the; the | B．a; / | C．a ; the | D．the ; / |
.When _____ if he had seen her, Mattew just shook his head.
| A．asking | B．asked | C．being asked | D．being asking |
Speaking of the songs he has written, I think this is probably his _____ one.
| A．better-known | B．well-known | C．best-known | D．most-known |
.A small plane crashed into a hillside five miles to the east of the city, _____ all on board.
| A．killed | B．killing | C．kill | D．to kill |