A. We can hope to reach our goals and truly make a difference by discovering what we do best.

B.　　    by discovering what we do best 　　    　　     hope to reach our goals and truly make a difference

A. The trouble is that it gives me an American accent

B.　　    　　   me is that it gives me an American accent.

A．There did not seem much point in working on my PhD

B. It seemed that 　　   was　　    　　    working on my PhD

Hold   　　    please. He’ll return 　　   no time.

Haven’t you received a letter 　　   invitation　　   Mr. Wang?

We’ve sent 　　   another man-made satellite 　　   this month

None 　　   my letters have been replied　　   .

You are an able man. I believe you can get 　　　　.

Dr. David Baker is an expert 　　   ENT, which stands 　　   the ear, nose and throat.

　　   last Mr. Zhang’ s ideas were accepted 　　   us.