【2013湖北宜昌】—Difficulties always go with me! —Cheer up! If God closes a door in front of you, there ______ be a window opened for you. A. would B. must D. could D. can
"______ I borrow your bike?" "Sure. Here you are."
He seems _______ nice.
More than two _______years ago, people knew little about the universe.
I can't drive a car now, but I_______ able to do it in 2015.
They arrived at our factory yesterday.