问题
We believe scientists will ______ a way to solve the problem of air pollution.
A:come up with
B:catch up with
C:come out
D:come up;
B:catch up with
C:come out
D:come up;
正确答案是：
同类题型
(2013·河南开封一模)It is announced that big prizes will go to ________ finishes the assignment on time
I think rice is better than noodles．—I don’tyou.They are both healthy foods．
We promise ________attends the party a chance to have a photo taken with the movie star.
I guess we’ve already talked about this before, but I’ll ask you again just _____[ ]