My mother can’t sleep well,and sometimes she even stays________(wake)the whole night.
Is it possible for us human beings to leave all the animals in the________ ________(自然环境)?
Some of my friends are interested in________ ________(集邮).
Do you know________ ________(发生什么)outside just now?
Don’t worry about my parents.They are both in________ ________(身体健康).
Soon they________ ________(飞越)the high mountains and landed safely in Tibet.