can close
Regular verb: close - closed- closed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can close
you can close
she can close
we can close
you can close
they can close 	I can be closing
you can be closing
she can be closing
we can be closing
you can be closing
they can be closing	I can have closed
you can have closed
she can have closed
we can have closed
you can have closed
they can have closed	I can have been closing
you can have been closing
she can have been closing
we can have been closing
you can have been closing
they can have been closing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot close
you cannot close
she cannot close
we cannot close
you cannot close
they cannot close 	I cannot be closing
you cannot be closing
she cannot be closing
we cannot be closing
you cannot be closing
they cannot be closing	I cannot have closed
you cannot have closed
she cannot have closed
we cannot have closed
you cannot have closed
they cannot have closed	I cannot have been closing
you cannot have been closing
she cannot have been closing
we cannot have been closing
you cannot have been closing
they cannot have been closing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I close?
can you close?
can she close?
can we close?
can you close?
can they close? 	can I be closing?
can you be closing?
can she be closing?
can we be closing?
can you be closing?
can they be closing? 	can I have closed?
can you have closed?
can she have closed?
can we have closed?
can you have closed?
can they have closed? 	can I have been closing?
can you have been closing?
can she have been closing?
can we have been closing?
can you have been closing?
can they have been closing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not close?
can you not close?
can she not close?
can we not close?
can you not close?
can they not close? 	can I not be closing?
can you not be closing?
can she not be closing?
can we not be closing?
can you not be closing?
can they not be closing? 	can I not have closed?
can you not have closed?
can she not have closed?
can we not have closed?
can you not have closed?
can they not have closed? 	can I not have been closing?
can you not have been closing?
can she not have been closing?
can we not have been closing?
can you not have been closing?
can they not have been closing?