Question

A good many tourists, ( )with natural beauty，forget their time to return

A impressing
B impressed
C was impressed
D being impressed 为啥选b
c 那错了

Answer 1

因为是被留下印象，所以用被动，同时这是过去分词做后置定语，所以不用was impressed，如果要选C的话，必须改成 who were impressed。主语是tourists，应该用复数were

Answer 2

impressed with natural beauty
被自然美景（给他们）留下了深刻的印象
impressed 这里是分词作为形容词，修饰 tourists
比如：
an interested student
an impressed teacher
词组 impressed with natural beauty 是形容词短语。
其他类似短语：
satisfied with the answer, the policeman let the man go
the dog, confused by the toy, began chasing its own tail
students bored with easy assignments spent their time playing video games instead

Answer 3

impressed with natural beauty, 是过去分词做伴随状语；
C选项有was 这个谓语动词，而原句中有forget这个谓语动词，二者不能同时存在，所以要去掉was