95. We live in an __________________(环境, 气氛) of freedom.

94. She _______( 发誓) that she hadn’t told anyone , but her friend still didn’t forgive her.

93. Friendship is always a sweet ________ (责任), never an opportunity.

92. Although the b________ scientist has made his mark in the field of physics, he is sometimes

　 absent-minded in his daily life.

91. Harry awkwardly a________ to the lady for stepping on her left foot.