The books have sold vs. The books have been sold
140956
Selling or sold?
40495
What's the difference between "has been living" and "has lived"?
99626
Present perfect or past simple
128120
"Has been" vs "was"
2643
"There are so many" vs. "There is so many"
16395
when to used had been and have been
10955
Past simple vs present perfect
53989
"have" vs."have got" in American and British English
72276
Have gone or Have been
64876
"I gave him + INDIRECT OBJECT" vs. "I gave + INDIRECT OBJECT+ to him"
5546
"The ticket is printing" vs "...is being printed"
89834
"I who has" vs "I who have."
68747
"I have sent it to X too" vs. "I have sent it to X also"
65426
Difference between Simple Past and Past Perfect
97227
"Has" vs. "have"
30317
"What he is looking for are books" or "...is books"?
21360
Direct and indirect object with "give" and "buy"