第24题: [单项选择]He ought to have handed in the paper yesterday. That's what he ______ . A. should do B. should C. should be doing D. should have done 参考答案:D 答案解析:[解析] 本题测试的是情态动词用法。“情态动词should+完成式”表示“本应做某事,实际上并未做”的意思。故本题答案为选项D。
第27题: [单项选择]Conversation OneA. She wants to book some plane tickets. B. Her assistant needs to buy some books for them. C. She needs to find a good hotel for the delegation. D. Her assistant needs to arrange the accommodation. 参考答案:D 答案解析:[解析] Why does the woman want to know the definite date for their arrival and the number of membe