Listen! I (think) ………………………….. someone (knock) ………………………….. at the door.
2. Up to the present, we (write) ………………………….. almost every lesson in the book.
3. The earth (circle) …………………………..the sun once every 365 days.
4. The farmers (work) ………………………….. in the field at the moment.
5. How many times you (see) …………………………..him since he went to Edinburgh?
6. Rivers usually (flow) ………………………….. to the sea.
7. Look! The boy (cry) …………………………...
8. Do you know that man, who (smoke) ………………………….. there?
9. Mrs Green always (go) ………………………….. to work by bus.
10. We (be) ………………………….. from France. We (be) …………………………..there for 20 years.
11. That house (belong) ………………………….. to Mr. Green.
12. Mai (lose) ………………………….. her dictionary.
13. I (be) ………………………….. sorry. I (forget) ………………………….. that girl’s name already.
14. I (wait) …………………………..for the manager for two hours.
15. You (ever, see) ………………………….. a lion?
Listen! I (think) ……think…………………….. someone (knock) …………………is knocking……….. at the door.
2. Up to the present, we (write) ………have written………………….. almost every lesson in the book.
3. The earth (circle) ……………circles……………..the sun once every 365 days.
4. The farmers (work) ………are working………………….. in the field at the moment.
5. How many times have you (see) …………seen……………..him since he went to Edinburgh?
6. Rivers usually (flow) ………flow………………….. to the sea.
7. Look! The boy (cry) ……is crying……………………...
8. Do you know that man, who (smoke) …………is smoking……………….. there?
9. Mrs Green always (go) …………goes……………….. to work by bus.
10. We (be) ……………are…………….. from France. We (be) …………………have been………..there for 20 years.
11. That house (belong) ………………belongs………….. to Mr. Green.
12. Mai (lose) ………lost………………….. her dictionary.
13. I (be) ………am………………….. sorry. I (forget) …………………have forgotten(tham khảo vế 2 c13)…….. that girl’s name already.
14. I (wait) ………………have been waiting…………..for the manager for two hours.
15. Have You (ever, see) …ever seen……………………….. a lion?
Listen! I (think) ………………think………….. someone (knock) ……………………is knocking…….. at the door.
2. Up to the present, we (write) …………have been writing……………….. almost every lesson in the book.
3. The earth (circle) …………circles………………..the sun once every 365 days.
4. The farmers (work) …………are working……………….. in the field at the moment.
5. How many times you (see) ……………have you seen……………..him since he went to Edinburgh?
6. Rivers usually (flow) …………flow……………….. to the sea.
7. Look! The boy (cry) …………is crying………………...
8. Do you know that man, who (smoke) ………is smoking………………….. there?
9. Mrs Green always (go) …………goes……………….. to work by bus.
10. We (be) ……………are…………….. from France. We (be) ………………have been…………..there for 20 years.
11. That house (belong) ………belongs………………….. to Mr. Green.
12. Mai (lose) ………lost………………….. her dictionary.
13. I (be) …………am……………….. sorry. I (forget) ………………have forgotten………….. that girl’s name already.
14. I (wait) ……………have been waiting……………..for the manager for two hours.
15. You (ever, see) ………Have you ever seen………………….. a lion?
