tests by leopold with the online test builder (78 tests)
Ranked by: number of candidates
1. A lot of, Much, Many (21480 candidates)
2. Made from, Made of, Made out of, Made with (17025 candidates)
3. Will or Would (16739 candidates)
4. How much/ how long/ how often/ how well (15552 candidates)
5. Worse or Worst (11849 candidates)
6. Had better or Would rather (11282 candidates)
7. So, Too or Very (9360 candidates)
8. Hate, Like, Love or Prefer (7725 candidates)
9. About to, bound to, due to (7388 candidates)
10. No one, nobody, nothing, nowhere (6606 candidates)
11. Elder, older, eldest, oldest (6371 candidates)
12. Can, should, must, could (5810 candidates)
13. To or Too (4894 candidates)
14. Difference between In and On (4816 candidates)
15. Below or under (4653 candidates)
16. Even - even if - even though (4301 candidates)
17. No, None, Not a, Not any (4216 candidates)
18. As if, like and as (3641 candidates)
19. Pronouns: this, that, these and those (3576 candidates)
20. Relative pronouns: who,whom,where,whose (3512 candidates)