1 You needn't have bought......    You could have borrowed....
2 He needn't have written to them he could have phoned (them)
3 He needn't have spoken to that man  he could have ignored him
4 We needn't have got up so early we could have stayed in bed till 8
5 Father needn't have wash the car he could have asked me to do it
6 Your brother needn't have brought a house he could have rented a flat
7 You needn't have listened to that boringlecture you could have left before the end.
8 We needn't have gone to their party we could have found an excuse.
9 You needn't have read "gone with the wind" you could have seen (gone to see) the film.
10 They needn't have drunked water they could have ordered a bottle of wine.
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1 Why didn't you borrow .... instead of buying them ?
2 Why didn't he phone them instead of writing to them ?
3 Why didn't you ignored that instead of speaking to them?
4 Why didn't we stay in bed to eigth instead of getting up so early ?
5 Why didn't Father ask me to wash the car instead of doing it himself ?
6 Why didn't your brother rented a flat instead of buying a flat ?
7 Why didn't you leave before the end instead of listening to that boring lecture ?
8 Why didn't we find an excuse instead of going to their party ?
9 Why didn't you see the film "gone with the wind" instead of reading the book ?
10 Why didn't they order a bottle of wine instead of drinking water ?
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1 They may have felt
   They are unlikely to have felt.
   They must have felt.
   They're sure to have felt.
   They're bound to have felt.

2 He may be looking forward to
  He's likely to be looking forward to
  He must be looking forward to
  He's sure to be looking forward to
  He's bound to be looking forward to

3 The wolves may win the match
  The wolves are likely to win the match
  The wolves must win the match
  The wolves are sure to win the match
  The wolves are bound to win the match

4 There may have been a lot of fog
   There's likely to have been a lot of fog.
   There must have been a lot of fog.
   There's sure to have been a lot of fog.
   There's bound to have been a lot of fog.

5 The neighbours may complain.
  The neighbours are likely to complain.
  The neighbours must complain.
  The neighbours are sure to complain.
  The neighbours are bound to complain.

6 They may be waiting for us.
   They are likely to be waiting for us.
   They must be waiting for us.
   They are sure to be waiting for us.
   They are bound to be waiting for us.

7 It may be a failure.
   It's likely to be a failure.
   It must be a failure.
   It's sure to be a failure.
   It's bound to be a failure.

8 She may have resented my remark.
   She's likely to have resented my remark.
   She must have resented my remark.
   She's sure to have resented my remark.
   She's bound to have resented my remark.

9 There may be trouble.
   There's likely to be trouble.
   There must be trouble.
   There's sure to be trouble.
   There's bound to be trouble.

10 She may be feeling a little homesick.
    She's likely to be feeling a little homesick.
    She must be feeling a little homesick.
    She's sure to be feeling a little homesick.
    She's bound to be feeling a little homesick.