一、用所给词的适当形式填空
1．It often rains ________ (heavy) in this season every year.(兰州)
2．She usually wears a pair of ________(glass).
3．—Can you come to my party tonight?
—Sure.See you ________(late)．
4．My father isn't tall or short.He's of medium ________(high)．
5．The higher the mountain is, the ________(thin) the air is.(兰州)
