问题

Nowadays，scientists are working hard to find a best way of treating addictions ________ drugs

A:of
B:in
C:on
D:to

正确答案是：

同类题型

Mary is the best student in our class. I wonder whether anyone has got _______ mark in this examination.

At the conference, they came up with three different _____ to solving the serious problem.

I’ll fly to Qingdao for my holiday thissummer.—Wonderful! __________

I think you can join an English club toimprove your English.—___________.

Parents must allow their children to receiveeducation by law.