`69.` Susan has kept a diary for five years.

Giải thích: S + started + to V/V-ing + khoảng thời gian + ago = S + have/has + Vpp + for + khoảng thời gian.

`70.` It has been suggested that income tax should be abolished.

Giải thích: S1 + V1 + that + S2 + V2 = It + be + V1 + that + S2 + V2.

`71.` The class trip was put off by the teacher until the summer term.

Giải thích: put off = postpone: hoãn || Bị động QKĐ: was/were Vpp (by O) 

`72.` Rebecca asked her sister how wide that cupboard was.

Giải thích: wide (adj): rộng

`73.` It took George ages to tidy up his room.

Giải thích: S + spend + time + Ving = It + takes + S + time + to V.

`74.` Dr. Scheider's had her house designed by a famous architect.

Giải thích: have sth done (by sb): có cái gì được làm (bởi ai)

`75.` Peter's mother accused him of having eaten all the ice cream.

Giải thích: accuse sb of V-ing/having Vpp: buộc tội ai vì điều gì.

@ `Ly`

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69. Susan has kept a diary for five years.
70. It has been suggested that income tax should be abolished.
71. The class trip was put off by the teacher until the summer term.
72. Rebecca asked her sister how wide this cupboard was.
73. It took George ages to tidy up his room.
74. Dr.Schneider had her house designed by a famous architect.

75. His mother accused Peter of eating all the ice cream.