71.We cannot ____________ (强调……的重要性) protecting our eyes too much. ( of )
72. He walked up and down the room, ________(陷入了沉思) (thought)
73. She stood there, with her eyes _______(盯住) the board. (fix)
74. He ____________ (有望) finish the work by March. (expect)
75.It’s not very far, so we____________(不妨) walk there.(as) (新概念2内容)