Okay, let's add question tags to the sentences.
- Jack isn't using the phone, is he?
- Jerry won't go sightseeing with you, will he?
- The boys are quarrelling, aren't they?
- Tom is doing his homework, isn't he?
- Tom must do his homework, mustn't he?
- Sally can't help us, can she?
- Tom can do his homework after lunch, can't he?
- You haven't got any questions, have you?
- Tom has got a CD player, hasn't he?
- There isn't an atlas in the schoolbag, is there?
- That's a new map, isn't it?
- There's a new map in the atlas, isn't there?
- It's got a new toy, hasn't it?
- He wasn't late, was he?
- There was a vase on the shelf, wasn't there?
- There were three boys in the bus, weren't there?
- Lena doesn't wear glasses, does she?
- Lena isn't wearing glasses, is she?
- Larisa speaks Italian, doesn't she?
- Larisa is speaking Italian, isn't she?
- The sheep sleeps here, doesn't it?
- The sheep is hungry, isn't it?
- Mr Smith often goes boating, doesn't he?
- That's a bookshelf, isn't it?
- There's a bookshelf above the desk, isn't there?