can close
Regular verb: close - closed- closed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can close
you can close
he can close
we can close
you can close
they can close 	I can be closing
you can be closing
he can be closing
we can be closing
you can be closing
they can be closing	I can have closed
you can have closed
he 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
he 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 can't close
you can't close
he can't close
we can't close
you can't close
they can't close 	I can't be closing
you can't be closing
he can't be closing
we can't be closing
you can't be closing
they can't be closing	I can't have closed
you can't have closed
he can't have closed
we can't have closed
you can't have closed
they can't have closed	I can't have been closing
you can't have been closing
he can't have been closing
we can't have been closing
you can't have been closing
they can't have been closing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I close?
can you close?
can he close?
can we close?
can you close?
can they close? 	can I be closing?
can you be closing?
can he be closing?
can we be closing?
can you be closing?
can they be closing? 	can I have closed?
can you have closed?
can he 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 he 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't I close?
can't you close?
can't he close?
can't we close?
can't you close?
can't they close? 	can't I be closing?
can't you be closing?
can't he be closing?
can't we be closing?
can't you be closing?
can't they be closing? 	can't I have closed?
can't you have closed?
can't he have closed?
can't we have closed?
can't you have closed?
can't they have closed? 	can't I have been closing?
can't you have been closing?
can't he have been closing?
can't we have been closing?
can't you have been closing?
can't they have been closing?