单项选择题 Bill couldn't ______ an answer when the teacher asked him why he was late.

单项选择题 Now the ______ port city near the mouth of the mighty Yangtze River is hoping to leave its record of turmoil behind and renew its status as the epicenter of Chinese modernization.

单项选择题 After lunch I felt ______ enough to ask my boss for a rise in my weekly wages.