题目

—Where is Tom ?     —Well , he       you          here . Otherwise he would come down right now .    A．didn’t know ; were                               B．hasn’t known ; are C．doesn’t know ; are                                D．hadn’t known ; were 答案：C 解析: 本句的语义环境为：第一个人现在想见Tom，而Tom未来，是因为Tom现在还不知道第一个人在那儿。故选C。— Do you play_______ping-pong?—Yes, it's_______.A.a; boringB./; interestingC.the; difficultD./; interested