ⅰ.品句填词
a)根据句意及汉语提示，写出所缺单词。
1．after the crash，an ambulance took the ____________(受伤者)to hospital immediately.
答案：injured
2．her graduation from college was a great ____________(事件)．
答案：event
3．it’s wrong for you to take ____________(遮蔽)under the tree in the storm.
答案：shelter
