单选题 - Do you want to wait?
- Five days ________ too long for me to wait.

单选题 It was well known that Thomas Edison _____ the electric lamp.

单选题 The top of the Great Wall is ________ for five horses to go side by side.

单选题 Don’t forget ________ the window before leaving the room.

单选题 I didn’t know what to do, but then an idea suddenly ________ to me.

单选题 A pair of spectacles ________ what I need at the moment.

单选题 You had better ________ a doctor as soon as possible.

单选题 I fell and hurt myself while I ________ basketball yesterday.