问题
An exercise method _____ to improve strength and balance is becoming popular in the United States.
A:designing
B:designed
C:to be designed
D:being designed;
B:designed
C:to be designed
D:being designed;
正确答案是：
同类题型
She says she still remembers the things and the persons ______ I told him last year.
－Why didn’t you give me a call last night?－Well, I couldn’tMy phone _____________
Do you know what he __________ two years ago-Yes, he was fat.
It was in the hotel _______ I stayedyesterday _______ the accident happened.