问题
It is difficult me _______ English well. But I’ll study harder.
A:stay
B:to stay
C:staying
D:stayed;
B:to stay
C:staying
D:stayed;
正确答案是：
同类题型
All my new friends ____________ clever and kind.
Tony, can you play_________ piano—No, But I can play______ chess.
Though he had tried to climb to the top ofthe mountain several times, he didn’t__________________.
Can you help me ______ the housework—Sorry, Mom. I have to help my father______ the car.