问题
选择题
A number of tourists ____ Yangzhou many times because it is such a beautiful city.
A． have been to
B． has been to
C． has gone to
D． have gone to
答案
答案：A
句中主语“a number of+名词复数”表示大量的······ ，则谓语动词要用复数。have been to表示去过某地（人已经回来了）；have gone to表示去了某地（人还没有回来），根据句中many times“许多次了”可知要用have been to，所以选择答案 A。