Ⅰ.单句语法填空
1．Remember to switch ________ the TV before you leave home.
2．The soldier's courage was partly due to his ability to keep ________(coolly)in the face of danger.
3．He is lazy and doesn't work hard，so there is ________ way that he can pass the exam.
4．She needed a clear head to carry ________ her instructions.
