America is a ________ country.A.develop B.development C.developing D,developed
The driver was badly hurt and he needed_________ at once.
— Was Dr Bethune ___________?— Yes, he came from _________ and gave his life to the Chinese people .
— I’m afraid I won’t be able to get to the top of the mountain. It’s hard for me.— Keep on! I’m sure you have a strong _________.
—I’ve just washed the car for you, Dad.— __________! We can set off right now.
Did you go _________ on vacation last summer?