Learning is a important part of our __________(develop).
He is a __________(honest) boy, and he always tells lies(说谎).
More and more students have realized the __________(important) of lemming English.
You can't __________(possible)run a mile in three minutes.
My father studies medicine.Now he is doing __________(medicine) research.
My friends and I may not have time to chat at school.But we can do it on QQ.It's very __________(help) to our friendships.
The __________(die)of this little dog made Kate quite sad.