Zoos are like ________ textbooks for young people.

Jack ran for a doctor; ________,we stayed with the patient [ ]

Have you _____ him to give up the job? — No. He doesn’t listen to me. [ ]

Even though the workers were not satisfied, they _____ to the boss finally.

hard to believe that Jack ________ have foughtwith the policeman.— Yes. If one ________ ask for trouble, it can’t behelped.