Chia dạng đúng của thì, giải thích tại sao chia thì đó
11. Sorry I can’t help you. I (not know)_____________where they keep their document.
12. I can’t talk on the phone now. I (drive) _____________home.
13. Is this the first time she (lose) _____________ her job?
14. She rarely (come) _____________ to see her parents because she is very busy.
15. Oh, No! Somebody (take) _____________ my car.
$\text{(-) S + do/does not + V-bare}$
$\text{(+) S + V-(s/es) + …}$