— Why not sit in your own seat Mary?I can’t see the blackboard clearly because two tall b

问题补充：

— Why not sit in your own seat, Mary?

I can’t see the blackboard clearly because two tall boys are sitting me.

A. next to

B. beside

C. in front of

D. opposite

答案：

A. next to

B. beside

C. in front of

D. opposite

解析：句意：为什么不坐在自己的座位上，玛丽？我不能清楚地看到黑板，因为两个高大的男孩坐在我前面。next to 紧挨着；beside在旁边； in front of 在前面；opposite相反的。所以选C。