Đáp án:

`-` QKĐ `:`

`( + )` `:` S + V2 / Ved + O.

`( - )` `:` S + didn't + V + O.

`(  ?  )` `:` Did + S + V + O ?

`-` HTTD `:`

`( + )` `:` S + is / am / are + Ving + O.

`( - )` `:` S + is / am / are + not + Ving + O.

`(  ?  )` `:` Is / Am / Are + S + Ving + O ?

`-` HTHT `:`

`( + )` `:` S + have / has + V3 / VpII + O.

`( - )` `:` S + haven't / hasn't + V3 / VpII + O.

`(  ?  )` `:` Have / Has + S + V3 / VpII + O ?

 `=>` For `+` Khoảng thời gian `;` Since `+` Mốc thời gian

`1.`  haven't had

 `=>` Thì HTHT `-` DHNB `:` yet

`2.`  didn't have

 `=>` Thì QKĐ `-` DHNB `:` last week

`3.`  is going

 `=>` Thì HTTD `-` DHNB `:` this weekend

`4.`  moved

 `=>` Thì QKĐ `-` DHNB `:` in  `2010`

`5.`  Have `-` visited

 `=>` Thì HTHT `-` DHNB `:` ever

`6.`  lived

 `=>` Thì QKĐ `-` DHNB `:` when he was a student

`7.`  Did `-` go

 `=>` Thì QKĐ `-` DHNB `:` yesterday

`8.`  have worked

 `=>` Thì HTHT `-` DHNB `:` Since  `2001`

`9.`  Have `-` seen

 `=>` Thì HTHT `-` DHNB `:` recently 

1.have not had

2. were not has

3.is going

4.moved

5.have-visited

6. was living

7.Did-go

8.have woked

9 Have-seen