So long as we work hard, we can o__________ every difficulty.

Some factories continue to pollute local rivers with              (有毒的) chemicals.

As soon as he saw us, he picked up a long _______(管乐器) which was covered with coins and opened one of the baskets.

—Tom has worked very hard this term.

—No wonder he has made great p__________ in every subject.

P__________ speaking, a teacher who is warm-hearted and helpful will be popular among students.

To keep healthy we should eat  __________（适当地）and exercise regularly.

The professors p_______ at the meeting stated their opinions about the problem.

Such a person experienced in _______ ( 组织) such a wedding party is welcome now.

The boy’s p   ▲    look means he doesn’t understand the maths problem.

I want to tell you ______________(亲自), “Sorry, I have hurt you.”