18. ______changed,and whatever men can do,woltllen call do,tooA Age had B Ages have C.Times have D Time has
I like getting up very early in the morning because the morning air is so good ______.
You ______ be hungry already — you had lunch only two hours ago!
The dictionary still ______ where I ______ it last Sunday.
Teenagers ______ their health because they play computer games too much.
The World War II made ______ impossible for Einstein to go on with his research.