One should remain ______ and think of ways to escape when facing danger.

(2013·浙江，18) If what your friend comes up with surprises you，don't reject it immediately.________，imagine that it is true.

Dr Watson wrote his name     and carefully at the top of the paper.

–Do you need any help, Lucy? -Yes. The job is  ________ I could do myself.

It is_____ any wonder that his friend doesn't like watching television much.