B Continue the series. fourth
1 first, second, third
2 second, fourth,
3 fifth, seventh,
4 tenth, fourteenth,
5 fifth, tenth,
6 seventh, fourteenth,
7 twenty-fifth, twenty-fourth,
8 twenty-eighth, twenty-ninth,

1 ‘Does he know her well?’ ‘He has known her since he was a little boy.’
2 ‘He looks fantastic!’ ‘He has gone to the gym a lot recently.’
3 She’s annoyed because he has been avoiding her all day.
4 I'm confused because I haven't understood the question.
5 Have you seen Judy today?’ ‘Yes, I saw her at lunchtime.’
6 ‘He has felt ill since Monday.’ ‘Then why hasn’t he gone to the doctor?’
7 ‘Have they unpacked all the boxes yet?’ ‘No, they’ve only just started!’
8 Has he eaten enough lately? He looks a bit thin.
9 She has never traveled by plane before. She’s scared of flying.
10 I have been working on this problem for hours, but I still haven’t solved it

1 ‘Does he know her well?’ ‘He (has known) her since he was a little boy.’
2 ‘He looks fantastic!’ ‘He (has been going) to the gym a lot recently.’
3 She’s annoyed because he (has been avoiding) her all day.
4 I'm confused because I (have not understood) the question.
5 Have you (seen) Judy today?’ ‘Yes, I saw her at lunchtime.’
6 ‘He (has been feeling) ill since Monday.’ ‘Then why hasn’t he gone to the doctor?’
7 ‘Have they (unpacked) all the boxes yet?’ ‘No, they’ve only just started!’
8 Has he (been eating) enough lately? He looks a bit thin.
9 She has never (travelled) by plane before. She’s scared of flying.
10 I have been (working) on this problem for hours, but I still haven’t solved it.