one box was not

English as a Second Language English Vocabulary, Grammar and Idioms
1

Are these sentences correct:
[color=red]
1-He told us that all of the boxes were in the lorry. We looked and we we noticed that a box wasn’t in the lorry.

[color=blue]2-He told us that all of the boxes were in the lorry. We looked and we we noticed that one box wasn’t in the lorry.

[color=indigo]3-He told us that all of the boxes were in the lorry. We looked and we we noticed that a there was a box that wasn’t in the lorry.

Gratefully,
Navi.

2

Yes, they are. They don’t sound very natural with the repetition of ‘box’ and
‘lorry’ though.
The usual sentence would be
We looked and noticed that one had been left out.