Parents should pay attention to areas ______ their child is having difficulty and spend extra time helping him or her.

Do you know the man _______ I shook hands just now?–Yes, I know him. He is a famous actor.

You have made a few mistakes in spelling but _______ you have done a good job.

the 2000 Olympic Games will be held in Beijing is not known yet.[ ]

se her family is too poor, she hasto ____ on her uncle for further education in the university