---Where is George? He said he would meet me here at 3 o’clock.---He seems ________ with Mr. Brown in the office.
70. I know it is difficult __________ him to talk like the lecturer, but I think he should grasp every chance .
69. With the guide leading the way, the visitors were able to travel through the forest not by air but _____ foot.
68. When the boy playing by the river fell into the river, I was out of the room _______.
67. The Prime Minister was more fit __________ his office than anyone else.
66. When the good news that our football team won the championship, the hall was at once _______ great joy.