`-` BĐ :

`+` HTĐ : S + is / am / are + VpII ( by O )

`+` QKĐ : S + was / were + VpII ( by O )

`+` HTTD : S + is / am / are + being + VpII ( by O )

`+` QKHT : S + had been + VpII ( by O )

`+` TLĐ : S + will be + VpII ( by O )

`+` Must : S + must be + VpII ( by O )

`1`.Tom's parents will be visited next month

`2`.The dinner is being prepared in the kitchen by her mother

`3`.This flower is watered by my father every morning

`4`.Fiona was invited to John's birthday party last night

`5`.The old theatre is being pulled down

`6`.The paintings will be exhibited till the end of the months by the organizers

`7`.An enormous hole had been cut in the steel door by the burglars

`8`.Their bikes mustn't be left in the hall

`9`.Her car was repaired yesterday

`10`.New students are always welcomed by the teacher

`11`.English is spoken all over the world

`12`.The phonograph was invented by Thomas Edison in `1877`

`13`.Two children were found in the forest by the police

`14`.Your order will be sent as soon as possible

`15`.The problem is being studied carefully by the scientists

`\text{# TF}`