You have to keep on learning if you want to keep __________with the development of modern science and technology.
We are invited to a party _________in our club next Friday.
He used to ______ games on the Internet, but now he is used to _______ a walk after supper.
----John and I will celebrate our fortieth wedding anniversary next month. ----Oh, _________!
-----We are going to England next month. -----_____________________________.
You can’t imagine ______ a little boy eats ____ many apples.