open the brackets put the verbs into the present indefinite the present continuous or the past indefinite.

Our teacher ( to look) through our exercise books every week.

Our teacher( to look)  
through our exercise books every now.

Our teacher( to look)  
through our exercise books
at the last lesson.
Mary often ( not to play) with her toys.
 
Mary 
( not to play) with her toys
now.
 

Mary 
( not to play) with her toys yesterday evening.
My father and I usually (to take) our dog for a walk in the evening. 

My father and I

(to take) our dog for a walk
now.
My father and I

(to take) our dog for a walk

 an hour ago.
She ( not to work) in the garden in autumn.

She ( not to work) in the garden now.
 
She ( not to work) in the garden last week.