21.According to the author, babies learn to do things which ().

91.As a result of the high costs of civil litigation, ().

90.Lord Woolf describes the British court system as a nightmare because ().

89.The passage is mainly about ().

88.What is the implication of the words on the bus wall

87.The word darted" in paragraph 5 can be best replaced by ()."

86.In Mark＇s opinion , ().

85.It is known from the passage that ().

84.His intelligence and experience will enable him to () the complicated situation.

83.Within two weeks of arrival, all foreigners had to () with the local police.

82.Sometimes it is very difficult to () some of the English words. Even the native speaker can not help.