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．