根据句意,用括号中所给的单词正确形式填空。
Some of the guides (导游 ) just don’t know how _________(show) visitors around
It’s not polite to go into the room without knocking on _________(people) door.
Everyone is busy with the mid-term exams, so we have no time________(play) volleyball.
We do eye exercises carefully (two) a day at school.
Each of us always _______ (stay) at home and studies hard at weekends.