When he picked up a large sum of money by accident, he battled with his _____ whether he should keep it or return it to the owner.
Carelessness always contributes _______ car accidents. Therefore, drivers are advised to concentrate their attention _______ driving.
With a lot of difficulties _______, they went to the seashore and had a good rest.
The number of people present at the meeting _______ two hundred and a number of them _______ from the countryside.
Giving up smoking is a slow and painful _______ for him.
Busy _______ he was, he managed to spare some time to help plan the project.