要原因)1._____is said that_____tourists visit Yu Garden every d
1个回答

1.C,it为形式主语,与其后的is said意为“据说”,要表达“成百上千”之意时,有固定搭配“thousands of”.

2.correctly ,修饰“have ”这个供词,要用与其同源的副词,意为“正确地”.

3.didn't attend,that后为从句,从句要服从主句时态,“was”为一般过去,因此用“didn't attend”