—Have you finished your homework?
—Not yet. Now I regret the whole afternoon surfing on the Internet.
| A．wasting | B．in wasting |
| C．to waste | D．to be wasting |
______ surprised the family most was ________ the girl played basketball very well.
| A．That; that | B．That; what | C．What; that | D．What; what |
Someone is ringing the doorbell. Let’s see _______.
| A．who is he | B．who he is | C．who is it | D．who it is |
It is very common that former people have difficulty in _____ modern life.
| A．sticking to | B．relating to | C．adjusting to | D．connecting to |
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 |