单项选择题
According to the author, babies learn to do things which（）
A．are directly related to pleasure B．will meet their physical needs C．will bring them a feeling of success D．will satisfy their curiosity
单项选择题 The babies would "smile and bubble" at the lights because （）
单项选择题 The barman didn't want to send the man away because（）
单项选择题 People who came to the bar were （）
