Last year i (stay) in London for six months: While I (stay) there, I (meet) John for the first time.

I (go) to London tomorrow because my uncle (stay) there for a few days and he (want) to see me.

If you (not start) getting ready at once. I'm afraid we (miss) the first item on the programme.

Tomorrow I (meet) an old friend who just (come) back from Africa.

At present, that author (write) a historical novel.

Up to now nothing (hear) from the search party

She (play) the piano when our guests (arrive) last night.

They (grow) different crops on this land since it (be) reclaimed some years ago.

When I arrived at the garage, a mechanic (work) on the car that my cousin (bring) in

`1`. have stayed

`-` DHNB: for six months `->` HTHT

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

`2`. was staying - was meeting

`-` Hành động đang xảy ra song song với nhau `->` QKTD

`-` QKTD: S + was/were + Ving

`3`. will go - will stay - wants

`-` DHNB: tomorrow `->` TLD

`-` TLD: S + will + V-inf

`4`. don't start - will miss

`-` HTD: S + V(s/es)

`-`  Be afraid + S + will + V-inf

`5`. will meet - has come

`-` DHNB: tomorrow `->` TLD

`-` TLD: S + will + V-inf

`-` DHNB: just `->` HTHT

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

`6`. is writing

`-` DHNB: at present `->` HTTD

`-` HTTD: S + am/is/are + Ving

`7`. has heard

`-` DHNB: up to now `->` HTHT

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

`8`. was playing - arrived

`-` Hành động xảy ra thì hành động khác cắt ngang

`+` Đang xảy ra dùng QKTD: S + was/were + Ving

`+` Cắt ngang dùng QKD: S + V2/ed

`9`. have grown - was

`-` DHNB: since `->` chia HTHT

`-` S + have/has + VpII + since + S + V2/ed

`10`. arrived - was working - had drought

was playing - arrived

`-` Hành động xảy ra thì hành động khác cắt ngang

`+` Đang xảy ra dùng QKTD: S + was/were + Ving

`+` Cắt ngang dùng QKD: S + V2/ed

`-` Hành động xảy ra trước hành động khác trong quá khứ `->` QKHT

`-` QKHT: S + had + VpII