Ⅰ.单句语法填空
1．He ran into the burning house to save the employee ________ hesitation.
2．No matter how busy he is，he makes ________ a rule to read at least 20 minutes a day.
3．After he was retired，his work was turned ________ to the secretary.
4．Whether the factory will be in ________ charge of me or not，I will resign.
5．The demand for tea is ________ the decrease each year.
