1. My mother has been busy ...... all afternoon.

A. cook B. cooking C. to cook D. cooked

$-$ Ta có cấu trúc: 

$⇒$ Busy+ V-ing: Bận làm việc gì

$-$ Thì HTHT:

$→$ S+ have/ has+ V-ed/ PII

2. "Thank a lot for lovely dinner "-"....."

A. You're welcome B. It's all right C. Thank you too D. Please don't say

$-$ Cụm từ:

$→$ You're welcome: Không có gì đâu

3. He ..... drive too fast because it's very dangerous.

A. should not B. don't should C. should D. not should

$-$ Ta có cấu trúc:

$⇒$ Should+ V-inf: Nên làm gì đó

$-$ Too+ adj: Qúa làm sao

$#Jade$