a number of tourists__yangzhou many times because it is beautiful
问题描述:
a number of tourists__yangzhou many times because it is beautiful
a have been to.Bwent to.Cwill go t.Dhave gone to
ji讲清楚原因
答
A因为前面是名词复数所以谓语必须相应用复数.至于要用have been to是因为后面出现了many times.所以现在完成时表示一种经历.