—Hello! May I speak to Tom, please?
—Yes, speaking.
—Oh, I______your voice at first.
| A．don’t recognize | B．didn’t recognize |
| C．hadn’t recognized | D．haven’t recognized |
He has been to America twice, _____.
| A．so have I | B．so I have | C．I have so | D．so did I |
There must be ____ with the machine.
| A．something wrong serious | B．something seriously wrong |
| C．something serious wrong | D．something wrong seriously |
____ I admire David as a poet, I do not like him as a man.
| A．Only if | B．If only | C．As much | D．Much as |
You’ll have to wait for one more week, ______ the manager will be back from his trip.
| A．before | B．when | C．as | D．until |
We finally bought several books by Shakespeare, ______ is one.
| A．which of them | B．which of whose | C．of which this | D．and of them |