问题

Mr. Wang is a nice teacher. He often helps his students with _______ physics after school.

A:them
B:their
C:theirs
D:his;

正确答案是：

同类题型

History is _____ simply memorizing dates, it’s about understanding the past.

Good morning, Eric. —________, Cindy.

The students didn’t find much about the topic on that website.

Some people are good at ________ but bad atgiving back

I often warn children ____ in the deep river.