Ⅰ.单句语法填空
1．When you start to get tired of the busy ________ (城市的) life，it would be better to spend a week at the beach.
2．A passerby described what he saw moments after the car b________ had exploded.
3．________(小麦) is grown in places which have cold winters and warm，dry summers.
4．It has rich milk ________(味道) with a little bitter taste，and many people love it.
5．The farmers shouldn't use so heavy c________ in their products.
6．They thought the prisoner had escaped through a specially constructed ________ (隧道).
