Ⅰ.用方框内所给单词的适当形式填空
1．We should be careful of the ________ dangers around children.
2．The little boy ________ me in his circle of friends yesterday.
3．At night we usually enjoy the ________ and peace in the field.
4．As she ________ the gate of the supermarket, her telephone began to ring.
5．She ________ the stamp on the envelope and ran to the post office.
