Give the correct tense or form of the verbs in brackets.

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`11.` have never seen `-` was directed

`+` HTHT : `( + )` S + have / has + V`3`/ed

`-` Bị động QKĐ : `( + )` S + was / were + V`3`/ed + by O

`12.` have been trying - to telephone - have...been

`+` HTHTTD : `( + )` S + have / has + been + V-ing

`-` DHNB : all week

`+` try + to V-inf

`+` HTHT : `( ? )` Wh/h + have / has + S + V`3`/ed ?

`13.` blamed

`+` Bị động QKĐ : `( + )` S + was / were + V`3`/ed + ( by O )

`14.` sitting - doing

`+` can't bear = can't stand + V-ing

`15.` ( Because ) he didn't finish

`+` QKĐ : `( + )` S + V`2`/ed

`10.` become

`11.` have never seen `-` was directed

`12.` have been trying `-` to telephone  `-` have you been

`13.` blamed

`14.` sitting `-` doing 

`-` can't stand + Ving : không thể chịu đựng được cái gì

`15.` Didn't finish

`-` BD QKD : S + was/were + V3/ed + (by O)

`-----`

`-` HTHT: S + have/has + PII

`-` HTHTTD : S + have/has been + V-ing + O

`-` Quá khứ đơn : S + V-ed/V2 + O