win the first prize in the nationalcompetition, _______ he is likely to be admitted to Peking University.

Tom’s sister didn’t do the dishes, she thought she should take ______/ke(r)/ of her hands.

Grandpa is getting old and he has trouble______ what others say to him.

It is　　　　he frequently returns home late　　　　makes his parents concerned about him.

Panasonic plans to lay off 35,000 employees globally within 2 years．—The cuts _____ 9% of the company’s staff．