Both students and parents appreciate thegreat importance schools have toeyesight protection

Mom used only half of the money, the rest of which ______ saved for other purposes.

Those who continuously acquire new knowledge that they can ______ their work are more likely to succeed.

31．—What’s the matter with Christine—A letter from her parents inCalifornia________an attack of homesickness.

I’m sorry. That wasn’t of much help.— ________. In fact, it was most helpful.