Third could not is walking was covered helped
Have walked
have been walking
have been eating
has been sleeping
have been working
have beeen working
has never said
have you heard
have picked
have been picking
have you seen
have been looking
<span>1)John and Harry are at school 2)They are sitting at their desks at the moment 3)John is looking at the teacher 4)She is writing on the board 5)John likes Maths 6)He brings his homework every day 7)And he never late for school.</span>