问题

are 61 million “left-behind children” in central and western China, the adults have to seek jobs in the cities.

A:who
B:which
C:when
D:where;

正确答案是：

同类题型

Some people will love music more than anything elsewhile others won’t be____it

My own handwriting style is different from _______ofmy friends

My sister often needs help with her study, ?

So far, Su Binglan is the only Chinese who finished the 100-meter race in less than 10 seconds.—– ______ he runs!

ied in 1750, but it was not until the early 19th century____ his musical gift was fully recognized.