The trouble is ________we are short of hands.
—Daddy, can you buy me a new MP3 when you go to Beijing? —You ______ get one if you are admitted to a key middle school.
---I’m afraid I must be off now . --- ____________________ .
The company has turned ____ e-commerce.
The enemies tried to ____ the city, but they failed in the end.
Japan is ____ the east of China, while India is ____ the west of China.