BOOK III RevisionI.单选题Each of the boys ___a computer.A. has B. have C. having D. are having 2. By the time he was 12, he ____5,000 words.A.was learning B. has learned C. had learned D. learned3. Tainwan is ____the southeastern coast of China.A. in B. to C. off D.on 4. The boss went into the house , ___the five boys ___in the rain.A