Cấu trúc thì httd

I + am + Ving

he / she/it + is + Ving

you/we they + are + Ving

-) S+ am/is/are + not + Ving

? Am/ is / are + S + Ving...?

1, is buying

2,is not studying

3,Is she running dow the street?

4,My cat is eating now

5,What are you waiting for?

6, are not trying

7,are having

8, are travelling

9, is drinking

10, is speaking

Vì đề bài là chia thttd nên các câu bắt buộc  phải chia ko cần bt dấu hiệu( 1 số câu có 1 số câu ko có)

$#Dứa$

1. is buying

2. isn't studying

3. Is .... running 

4. is eating

5. are .... waiting 

6. are not trying

7. are havi ng

8. are travelling

9. is drinking

10. is speaking

Cấu trúc:

(+) S + am/is/are + Ving + O

(-) S + am/is/are + not + Ving + O

(?) Am/is/are + S + Ving + O?

Dấu hiệu: At the moment, now, right now, be careful, Look!, Listen!, ......