91.When he was a young man be very early.
2个回答

91.C(used to do过去常常做某事)

92.B(see/catch/watch sb doing sth看见某人做某事)

93.C(so...that...:如此...以致...)

94.C(it was because.that..固定搭配)

95.B(for fear以免)

96.A(it was necessary that he (should) do sth,所以用动词原形)

97.A(used it to do=did it use to do)

98.D(more than超过,更多)

99.C(expect sb to be 期望某人成为...)

100.B(at the time of 在...的时候)

个人意见,仅供参考.