Giúp mik với nhé =)))) Ex1. Choose and underline the best answers: 1. I used to (watch - watching - watches – watched) that film when I was ten. 2. They always help their mother (do –to do - doing – done) the house work. 3. You should (wash – to wash – washing – washed) your hands before meals. . 4. You ought (wash – to wash – washing – washed) your hands before meals.​ 5. I am used to (getting – get – to get – got) up early. 6. Do you mind (open – to open – opening – opened) the door? 7. I look forward to (see – seeing – saw – seen) your reply. 8. We go to school in order (to prepare – prepared – preparing – prepare) our future. 9. We suggest (go – going – to go – went) on a picnic. 10. The sad movie made me (cry – to cry – crying – cried). Ex2. Complete the form of the verbs in parentheses:​ 1. You must (wash) ...................... your hands before meals. 2. I am used to (stay) ...................... up late. 3. They let him (play) ...................... here. 4. It’s no use (tell) ...................... him the truth. 5. You had better (be) ...................... there on time. 6. I used to (visit)...................... Nha Trang. 7. Mai is busy (cook) ...................... in the kitchen. 8. I have difficulty(learn) ...................... English. 9. It is a waste of time (wait) ...................... for him. 10. I hear him (sing) ...................... in the room. Ex3: Supply the correct tense for the verbs in brackets 1. They suggest we ( use)................................ solar energy instead of gas. 2. I dislike ( watch) ...........................advertisements on TV. 3. I suggest ( recycle)...................... as much paper as possible to save trees. 4. You like( watch) ..............................sports, don’t you? 5. We are interested in (play)....................... games on the computer. 6. I suggest ( save) ..........................energy. 7. Ba enjoys ( chat) with his friends. 8. Nam wishes he could ( fly)....................... 9. They are going to (meet) ..........................their old friends. 10. My mother used to ( be)............................ a teacher. 11. She must ( do )......................... her homework now. 12. Would you like ( come ) .....................to Lan’s party? 13. Let’s (buy).............................. some meat. 14. Would you mind ( open)........................ the door? 15. Do you mind if I ( take).................... some photos? 16. Would you mind if I (sit)....................... here? 17. Do you mind (open)............................. the windows? 18. Lan is fond of ( swim).......................... 19. She gets used to ( get ) ...........................up early in the morning. 20. It is important for us ( learn) ...........................English.