根据中文提示写出单词或词组,按适当形式填空。
The place has rapidly __________(发展) from a small village to a famous place of interest.
We couldn’t go home ___________(除非) we cleaned the classroom.
It’s ________( 可能的) that we gave him the wrong information.
The air was so cold that we could hardly ___________.(呼吸)
He had to ____________( 帮助养活) his family when he was a child.