问题 填空题
stay in touch, pay back, say goodbye to, as we all know,  prepare for, be strict with
1. My parents _____ me in my study.
2. At that time Simon _____ the coming exam.
3. Have I _____ the money I borrowed from you, Kate? I can't remember that now.
4. After _____ her parents, Sandy hurried to school.
5. Please call me or chat with me online. It would be nice to _____. 
6. _____, China is a developing country.
答案

1. are strict with           2. was preparing for      3. paid back

4. saying goodbye to       5. stay in touch         6. As we all know

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