课堂闯关（15分钟）
I.根据汉语提示完成句子（用省略形式）
1.When_____ _(处于困境中),I always turn to her for help.
2. The little girl seldom,_______ _(如果曾经有的话）,turned to her parents forhelp.
3.___（必要时）,you can send me an e-mail.
4. He opened his mouth___（好像要说）something.
5. When____(进入办公室）,we found Winifred seated at a desk.
6. （当被邀请跳舞时），she refused.
