Làm giúp t bài này vs nhanhh lên ạ

` 1`. should

` 2`. used to

` 3`. didn't used to

` 4`. shouldn't

` 5`. didn't used to

` 6`. shouldn't

` 7`. didn't used to

` 8`. should

` 9`. used to

` 10`. should

` -------`

` -` should + V-inf : nên

` -` shouldn't + V-inf : không nên

` -` used to + V-inf : đã từng

` -` didn't used to : không từng

1. should

2. used to

3. didn't use to

4. shouldn't

5. didn't use to

6. shouldn't

7. didn't use to

8. should

9. used to

10. should

--------------------

--> used to + V-bare/didn't use to: thói quen trong quá khứ, giờ không còn

--> should/shouldn't + V-bare: nên, không nên làm gì