Cho dạng đúng của động từ trong ngoặc để hoàn thành các câu sau: The children (clean)___________ the windows at the moment

I. Cho dạng đúng của động từ trong ngoặc để hoàn thành các câu sau.
Question 5. The children (clean)___________ the windows at the moment.
Question 6. He used to (smoke) _____________ 10 cigarettes a day.
Question 7. Our teacher asked us (prepare) _____________ our lessons carefully.
Question 8. I (go) _____________ to the restaurant with my brother yesterday.
Question 9. Look at those black clouds! It (rain) _____________.
Question 10. They (not finish) _____________ their homework yet.
Question 11. If the weather is fine, we (go) _____________ for a picnic.
Question 12. This house (build) _____________ over 100 years ago.
II. Chọn một từ đúng trong ngoặc để hoàn thành các câu sau.
Question 13. Nam is a student ________ school is in the countryside. (He / His)
Question 14. She has been a teacher of English ________ 2001. (since / for)
Question 15. Mai didn’t go to school yesterday ________ she was ill. (because / although)
Question 16. My sister speaks English very ________. (fluent / fluently)
Question 17. Tet is the most important _______ in Vietnamese culture. (celebrate / celebration)
Question 18. What’s the name of the man ________ gave us a gift? (who / whom)
Question 19. You should write ________ ink, not with your pencil. (in / by)
Question 20. I will play tennis tomorrow ________ I am busy. (unless / if)