Children under six are not __________to school except those of extraordinary intelligence.
| A．permitted | B．admitted | C．accepted | D．received |
I hate _______ if people say such things in public.
| A．that | B．those |
| C．it | D．them |
I dislike _______ when others laugh at me in publicorthink poorly of me behind.
| A．that | B．those |
| C．it | D．them |
Yes, ______ is difficult to find a job nowadays, but _____ is more difficult is try to find such a job with a high salary but little things to do.
| A．it, it | B．what, what |
| C．it, what | D．what, it |
. Everyone knows that _______ is dangerous to play with fire, but _______ is difficult is to prevent children from playing with fire.
| A．it, it | B．what, what |
| C．it, what | D．what, it |
I know ______ is important to know my own limitations, but _______ is difficult is to help others to know their own limitations.
| A．it, it | B．what, what |
| C．it, what | D．what, it |