五、補全對話(共5句;每句滿分為3分,共15分。)根據中文提示, 將對話中缺少的內容寫在線上。這些句子必須符合英語表達習慣。打句號的地方,用陳述句;打問號的地方,用疑問句。

提示：Mary與Bill不期而遇,邀請他一起吃晚飯。但Bill當晚7點要去，下周一回來。Mary讓Bill回來后給她打電話。

M: Bill, is that you? I haven’t seen you for a long time.

B: Hi, Mary. Great to see you again. _____51_____?

M: Fine. Why don’t we get together and have a chat? How about _____52_____ this evening?

B: Well, it sounds great, but I’m _____53_____ at 7 o’clock.

M: What a pity!

B: Well, I’ll be back_____54_____We can find a time to meet again.

M: Okay. _____55_____ when you are back.

B: No problem. Goodbye!

M: Bye!

I′ll never forget the day __________ I became a doctor.

• A、that

• B、which

• C、where

• D、when

28.（）

• A、wealth

• B、knowledge

• C、courage 

• D、strength