170. It’s never too late to learn. 活到老,学到老。

20. — We are going to have a singing party tonight. Would you like to join us?
---今晚我们有个歌唱聚会,你想来吗?
— _______ ---恐怕不行,因为我得参加一个重要会议。

17. — Would you like to go to the concert with us this evening?
— _______
---今晚你能和我们一起去听音乐会吗?

16. — Please help yourself to the seafood. ---请吃点海鲜。
— _______ ---谢谢,但是我不吃海鲜。

11. — Could you help me with my physics, please? ---请问你能帮我做物理课作业吗?
—____________ ---很抱歉不行。我马上要去开会。

100.— Hi, is Mary there, please? ---请问Mary在吗?
— _______ ---别挂断,我去叫她。

76. — I'm sorry. Bob is not in his office. ---对不起。鲍勃不在办公室。
—_________ ---你能帮我留个言吗?

74. — Could you speak more loudly? ---你说话声音能再大一点吗?
— _______________. ---线路不好。

62. — _________? ---您是哪位?
—This is Mr. Smith speaking now. ---我是史密斯。

55. —Is Mary there? ---我想找玛丽。
—__________ ---请讲。(我就是。)

44. —Good morning, may I speak to Mark, please? ---早上好,我找马克。
—__________ ---请问您是哪位?