Bill opened the door to Harold and ______ him with cries of welcome.
| A．shouted |
| B．waved |
| C．signaled |
| D．greeted |
I would appreciate _______ very much if you could give me some suggestions.
| A．this | B．that |
| C．it | D．you |
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 |