Ⅰ.根据句意及首字母提示补全单词
1．The temperature is l________ today.You'd better wear more clothes.
2．Mary didn't stop crying u________ she saw her mother.
3．There are two z________ in the number 100.
4．Bob is very weak in maths. His school grades are always b________ average.
5．Lots of animals live in the b________.
