`2.` We can't certainly afford (to buy) a new car.

- S + can/ can't + V(bare)

- afford + to-V

`3.` Tom carefully cuts the paper.

- S + V(es/s)

`4.` The tourists didn't walk too far.

- S + didn't + V(bare)

`5.` They have lived in the same house for a long time.

- DHNB: for a long time `->` thì HTHT 

- S + have/has (not) + V-pp 

`6.` I haven't recently been to the cinema.

- BĐ thì HTHT 

- S + have/has (not) + been + V-pp (byO)

`7.` Mrs. Browns usually goes to the bank every Friday.

- S + V (es/s)

`8.` Mrs. Michael occasionally saw John in the supermarket last year.

- DHNB: last year `->` thì QKĐ 

- S + V (ed/ cột 2)

`9.` The Queen has visited the show regularly since 1985.

- DHNB: since `->` thì HTHT 

- S + have/has (not) + V-pp 

`10.` The Prime Minister went to Greek last year.

- DHNB: last year ->` thì QKĐ 

- S + V (ed/ cột 2) 

`11.` I didn't see you at the party on Saturday night.

- S + didn't + V

`12.` The protesters marched through the streets yesterday.

- DHNB: yesterday `->` thì QKĐ 

- S + V(ed/ cột 2)

`13.` They arrived at the theatre late last night.

- DHNB: last night `->` QKĐ 

- S + V(ed/ cột 2)

`14.` Olga has obviously been studying hard recently.

- BĐ thì HTHT 

- S + have/has (not) + been + V-pp (byO)

`15.` They, fortunately, landed safely on a small field.

- QKĐ: S + V (ed/ cột 2)