问题
Private taxi booking apps have ______ like mushrooms in the past few months because of their convenience and high efficiency.
A:broken up；
B:lined up；
C:come up；
D:sprung up;
B:lined up；
C:come up；
D:sprung up;
正确答案是：
同类题型
I think he is taking an active part in social work. — I agree with you _______.
The teacher asked the students to do the experiment __________ small groups
Tom has formed the habit of jogging_________ thetree-lined avenue for two hours every day.
He is famous both ______ a novelist and a poetbut he is more famous ______ his novels