So were you in what you were doing that I dared not make any sound when I came in.
| A．curious |
| B．concerned |
| C．absorbed |
| D．focusing |
______ surprised the hostess most is _______ one of her friends left the party without saying a word.
| A．What, what | B．What, that |
| C．That, that | D．That, what |
_____ is even important _____ as the earth cooled down, water began to appear on its surface.
| A．That, which | B．What, that |
| C．What, what | D．It, that |
I don’t think she will come to the meeting on time, ______?
| A．do I | B．do you |
| C．will she | D．won’t she |
We don't imagine the twins have arrived, _____?
| A．do we | B．have they |
| C．don’t we | D．haven’t they |
Mother said that Mike could eat two of ten oranges and that the rest _______ left for Tom and Betty.
| A．were | B．was | C．be | D．being |