$\text{10.}$ watched 

→ Thì QKĐ - last night 

→ S + Ved/cột 2 + O 

$\text{11.}$ have travelled 

→ Thì HTHT - many times 

→ S + has/have + Vpp + O 

$\text{12.}$ have had 

→ Thì HTHT - since then , however 

$\text{13.}$ were crossing - saw 

→ As +  S + was/were + V-ing , S + Ved/cột 2 

$\text{14.}$ was walking - saw

→ While + S + was/were + V-ing ,  S + Ved/cột 2 

$\text{15.}$ went out - was shining 

→ When + S + Ved/cột 2 , S + was/were + V-ing 

$\text{16.}$ had gone - sat - rested 

→ After + S + had + Vpp ,  S + Ved/cột 2 

$\text{17.}$ came - had finished 

→ Before + S + Ved/cột 2 , S + had + Vpp 

$\text{18.}$ rang - was having

→ When + S + Ved/cột 2 , S + was/were + V-ing 

$\text{19.}$ were singing - came 

→ S + was/were + V-ing + when + S + Ved/cột 2 

$\text{20.}$ went - had stopped

→ S + Ved/cột 2 + as soon as + S + had + Vpp 

9, have studied

10, watched

11, have travelled 

12, have had

13, were crossing, shouted 

14, was walking, saw

15, went out, was shining

16, had gone, sat, rested 

17, came, had finished 

18, rang, was having 

19, were singing, came

20, went, had stopped