9.

a. It's happy to see you again

b. I am delighted to receive your present

c. We are well-prepared to attend English speaking contest.

d. He anxious to wait for the semester report

e. We are happy to receive ...

f. He is smart enough to answer all the questions

10.

a. She is very happy to pass all the exams

b. They are already to go to clean the schoolyard

c. It's very difficult to keep people from littering

d. I am excited to hear about the plan to reuse the plastic bags

e. It's lucky to study in a new school

f. She is not pleased to complete her homework

ex 9.

a. It's happy to see you again.

b. I am delighted to receive your present.

c. We are well-prepared to attend English speaking contest.

d. He anxious to wait for the semester report.

e. We are happy to receive ...

f. He is smart enough to answer all the questions.

 ex 10.

a. She is very happy to pass all the exams.

b. They are already to go to clean the schoolyard.

c. It's very difficult to keep people from littering.

d. I am excited to hear about the plan to reuse the plastic bags.

e. It's lucky to study in a new school.

f. She is not pleased to complete her homework.

Nếu bạn thấy hay, hãy cho mình 5*, cảm ơn và câu trả lời hay nhất để mình có động lực giải bt tiếp nhé.