we aren't doing an exam. we are working in groups.
they aren't playing tennis. they are playing football.
she isn't working. she's writing a letter
he isn't walking. he's sitting on the bus.
you aren't studying for your exams. you are surfing the internet.
you aren't listening to me. you are looking out of the window
we aren't doing an exam. we are working in groups.
they aren't playing tennis. they are playing football.
she isn't working. she's writing a letter
he isn't walking. he's sitting on the bus.
you aren't studying for your exams. you are surfing the internet.
you aren't listening to me. you are looking out of the window