6. Circle the correct alternative. 1 We've got a/an teacher. We see a/the teacher online. 2 The/0 online schools aren't common. 3 It's a/an interesting way to study. 4 The/0 classrooms are online classrooms.

Here are the answers with the correct alternative circled: 1 We've got a/an teacher. We see a/the teacher online. - *an*, *the* 2 The/0 online schools aren't common. - *0* 3 It's a/an interesting way to study. - *an* 4 The/0 classrooms are online classrooms. - *0*