10.B,Was tidying/found

QKTD + when+ QKĐ

11.A.Cuttedd/was cook

QKĐ + while + QKTD

12.B.Saw

QKTD + when+ QKĐ

13.B. Feel/ was lying

QKĐ + while + QKTD

14.A.Was reading/was watching

2 việc cùng xảy ra tại 1 thời điểm trong quá khứ

15.A.Correct

Past Continuous:

He was doing his homework when I called him. ⇒ CORRECT

16.A.Were dancing

QKTD + when+ QKĐ

17.B.Hit/was dancing

QKĐ + while + QKTD

18.C.Were you doing

Thì QKTD dạng câu hỏi.

DHNB: when the accident occurred.

CT chung của thì QKTD+QKD:

S + was/ were + V-ing when S + Ved; S + Ved+ while+ S + was/ were + V-ing

$\text{10.}$ A 

$\text{11.}$ C 

$\text{12.}$ B 

$\text{13.}$ B 

$\text{14.}$ A 

$\text{15.}$ A 

$\text{16.}$ B 

$\text{17.}$ B 

$\text{18.}$ C 

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

→ S + was/were + V-ing + O + while + S + was/were + V-ing + O 

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

$#Keisha$