He(visit) a very interesting lecture on a healthy lifestyle this week.
Physical exercise (help) her to feel and look better?
Teenagers' smoking (create) problems for their health.
He is busy/He(write)an essay about smoking.
She(not to join)a school Tennis Club yet.
Who(surf )the Internet the whole day?

1has visited2does physical exercise help her to feel and look better?3creates4is writing5hasn't joined6is surfing