1.

(-) This signs doesn't say 'stop'

(?) Does this signs say 'stop'

2.

(-) Mr Quang isn't eating his breakfast at a foodstall now

(?) Is Mr Quang eating his breakfast at a foodstall now?

3.

(-) She doesn't travles to work by motorbike every morning.

(?) Does She travles to work by motorbike every morning?

4.

(-) He isn't unloading the vegetables at the market now.

(?) Is is unloading the vegetables at the market now?

5.

(-) That signs  doesn't says 'No turning right.'

(?) Does that signs says No turning right.?

6.

(-) That man isn't going into the one-way street.

(?) Is  that man  going into the one-way street?

1.This signs says stop

(-)This signs doesn't say stop.

(?)What does this signs say ?

2.Mr.Quang is eating his breakfast at a foodstall now.

(-)Mr.Quang isn't eating his breakfast at a foodstall now.

(?)Where is Mr.Quang eating his breakfast now?

3.She travles to work by motorbike every morning.

(-) She doesn't travle to work by motorbike every morning.

(?)How does she travel to work every morning?

4.He is unloading the vegetables at the market now.

(-)He isn't unloading the vegetables at the market now.

(?)What is he doing now ?

5.That signs says No turning right.

(-)That signs doesn't say No turning right.

(?)What does that signs say?

6.That man is going into the one-way street.

(-)That man isn't going into the one-way street.

(?)Where is that man going ?