6 This house isn't used very often by them
7 Is French taught in this school ?
8 A lot of beautiful toys are made from recycled plastic
9 The streets are cleaned by the workers every day
Giải thích : _ Bị động : Hiện tại đơn
_ Cấu trúc :
(+) S + is/am/are + PII (by.....)
(-) S + is/am/are + not + PII (by.......)
(?) Is/Am/Are + S + PII + (by......)