高中英语经典例题：
1 They _______ the Summer Palace three times
A have gone to B have been to C have been in
2 The classroom ______ 30 feet long
A is measured B measures C has D has length
3 The pencil _____ well
A writes B is written C was written D writing
最佳答案 1B 他们已经去了三次颐和园了。由题意得是（去过） A项指（去了，还没回来。）B项（去过）C项（在《《后多加如for three months等段时间）
2B measure 在本句中有被动意义却无被动式
类似的还有（the pen writes well)(the book sells well)
注：上述例句只有在后加WELL的时候不用被动，如（the book was sold out soon)
3 A 解释通2问