问题

Cars do cause us some health problems—in fact far more serious ________ than mobile phones do.

A:one
B:ones
C:it
D:those

正确答案是：

同类题型

It is surprising for them to complete _____ work in _____ [ ]

Do you know anything about Chinese knots (中国结)— Yes. They are usually regarded ______ symbols of good luck.

The U.S. first lady Michelle Obama, arrived in China on March 20, 2014 for _______ six-day visit, focusing on _______ importance of cultural exchanges.

He is a foreigner, ___ I knew from his accent.

______ are the students in your class—Most of them are only fourteen.