4 a)about / b) for the lack of warning, but we
I'd say both were acceptable
5 a)have been / b) were (possible ?) busy moving house and I
Probably A as it isn't finished, which makes 6a more likely
6 a)have had / b) had (possible?)
9 a) haveonlydecided / b) only decided / c) had only decided to hold the party last week when we
Last week- so b)
14 a)a little / b) some cash to spare.
This evening we 18 a) decided / b) have decided to have
The decisioon is past, so I'd use the past tense
21a)a few invitations to 22 some friends. // b) some invitations to some friends (possible ?)
The second is not incorrect, but the first sounds better
You 23 a) can do / b) should do the trip
Should works better
Barbara and I hope you 33 a)can make / b) will make (incorrect?) it in spite of the short notice.
Can is better here- it's an invitation
Is it true that after the verb "hope" we cannot use the future?