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` 6`. A

` -` Bị động QKĐ : S + was/were + V-ed/V3 + (by + O) ...

` 7`. A

` -` Bị động HTHT : S + has/have + been + V-ed/V3 + (by + O) ...

` 8`. C

` -` Bị động HTHT : S + has/have + been + V-ed/V3 + (by + O) ...

` 9`. C

` -` Bị động HTĐ : S + is/am/are + V-ed/V3 + (by + O) ....

` 10`. D

` -` Bị động modal verbs : S + modal verbs + be + V-ed/V3 + (by + O) ...

` 11`. B

` -` Bị động TLĐ : S + will be + V-ed/V3 + (by + O) ...

` 12`. has been produced

` -` Bị động HTHT : S + has/have + been + V-ed/V3 + (by + O) ...

`\color{#145277}{N}\color{#246483}{a}\color{#34768F} {e}\color{#44889B}{u}\color{#539AA7}{n}`

`6.` `A`

`-` DHNB : were

`-` Only one : chỉ có `1` `=>` chia "was"

`@` QKĐ : S + was / were + V3/ed

`7.` `A`

`-` DHNB : since `1980`

`@` HTHT : S + have / has + been + V3/ed

`8.` `C`

`@` HTHT : S + have / has + been + V3/ed

`9.` `C`

`-` DHNB : everyday

`@` HTĐ : S + am / is / are + V3/ed

`10.` `D`

`@` Modal verbs : can, could, may, might, should, ought to, must, have to, will, would, be going to + be + V3/ed

`11.` has been produced

`@` HTHT : S + have / has + been + V3/ed