There are thousands of visitors()Hangzhou every year
问题描述：
There are thousands of visitors()Hangzhou every year
括号里面应该填visiting 还是visited?
2、When he was in Hangzhou,he() to the west lake once a week.
中间填goes,went的哪一个?
答
went
条件句限定是过去式
后面的主句必须保证时态相同