Complete the dialogue with proper words or sentences.

（Mrs. White and Zhang Tao are talking on the playground.）

A——Zhang Tao, B——Mrs. White

A: Good afternoon, Mrs. White！I haven’t seen you for a long time.

B: Good afternoon, Zhang Tao! （1）________________________________?

A: Fine, thanks. And you?

B: I’m fine, too. School term is nearly over. （2）________________________________?

A: I’m going to take courses in a summer school.

B: （3）________________________________?

A: English and computer.

B: （4）________________________________?

A: Because English and computer are getting more and more important in our life.

B: （5）________________________________. I hope you will work hard at them.

A: Thank you. I’ll do my best.

—Do you know the teacher ____ classes are interesting and exciting?

— Yes, she is Mrs. Zhang.

A. which       B. whose         C. who        D. that