This book is __________ I can't read it.
| A．such difficult that | B．so difficulty that |
| C．such difficulty that | D．so difficult that |
I really don’t know ___ ___I kept the secret papers.
| A．where was it | B．it was where that | C．where it was that | D．where was it that |
---Why do you look so upset?
---There are so many troublesome problems ____.
| A．remaining to be settled | B．remained settled |
| C．remaining to settle | D．remained to be settled |
It didn’t _____ him that she would refuse his invitation
| A．happen to | B．adjust to | C．belong to | D．occur to |
The seawater takes ____ a lot of heat in summer.
| A．up | B．in | C．over | D．off |
That was the first time I _______ there and I was impressed by the friendly people very much.
| A．go | B．was going | C．had gone | D．have gone |