1. They are skillfull workers
2. You listen well
3. Hoa asked me if i could give her a book
4. The Teacher told us to sit down
5. Nam advised me should do more English grammar exercises
Part2:
1. I am pleased to hear you had an enjoyable May Day
2. I received my second semester report 2 months ago.I got good grades for Math and Chemistry but my English result is poor. My English teacher told me to spend more time listening and writing. It is Teacher's day next week. I and my friends will take part in the anniversary. Write soon and tell me about your news