Directions: Read the following invitation letter and complete it with words or expressions from the box.

appreciate　spare　on behalf of　accept our invitation　pay a visit　arrangements

Dear Prof. Johnson,

I hear from Prof. Davy Wang that you are going to 1._______________to China for a research project in the middle of October this year. I am writing 2._______________tothe Department of Biology to ask whether you could 3._______________tosome time (one or two days) to give some lectures to the staff and students from the Department of Biology on the following topics:

1. Gene therapy and enhancement in genetic engineering

2. Clinical research and clinical practice with respect to genetic engineering

3. Genetic engineering for a theological perspective

We would very much 4._______________toit if you could 5._______________to. In order to make the necessary 6._______________to, please indicate on which day(s) you could come to our university.

We look forward to hearing from you.

Yours sincerely,

Zhang Jian

Chairman

Department of Biology