2006年6月真题

87. Having spent some time in the city, he had no trouble __________ (找到去历史博物馆的路).

88. __________ (为了挣钱供我上学), Mother often takes on more work than is good for her.

89. The professor required that __________ (我们交研究报告) by Wednesday.

90. The more you explain, __________ (我愈糊涂).