He has to learn to use chopsticks, ______．he married a Chinese wife．

Which do you think is______important, money or healthA．...

单项选择题Which do you think is______important, money or health

I know the boy__________parents are dead．A．whichB．whoC．...

单项选择题I know the boy__________parents are dead．

I can’ t stay ______ long．A．toB．atC．for

单项选择题I can’ t stay ______ long．