It was not until the 18th century that man realized that the whole of the brain was involved in the working of the mind， ？
| A．was it | B．wasn’t it | C．did they | D．didn’t they |
— Which of these two books will you take?
—I will take ______ in case the trip is boring.
| A．all | B．either | C．both | D．neither |
—Peter, you look so tired and wet all over!
—Yes, all afternoon I ________ football on the playground.
| A．am playing | B．have been playing | C．played | D．have played |
The passengers were at ________ loss when ________ word came that their voyage was called off because of the hurricane.
| A．the; a | B．a; the | C．a；/ | D．/; a |
— Did you enjoy the film you saw last night?
—______. I just did it for a change, as I was tired from working all day.
| A．Not necessarily | B．Not exactly | C．Not likely | D．Not really |
— You should have told her about the meaning of the gesture.
— I meant ______, but I had some unexpected guests.
| A．to do | B．to have | C．doing | D．doing so |