---Peter, where did you guys go for the summer vacation?---We _______ busy with our work for months, so we went to the beach.
Jack has had no ________experience of this kind of job,but he got the job offer just due to his honesty.
________in a traffic jam yesterday morning,Jack did not arrive at his office on time.
Sam managed to keep in________contact with his family while he was working in New Zealand.
The boy is always found______in reading books.
After a few courses on painting,Helen said she would ________oil pointing in her spare time.