---Remember the first time we met, Mary?
---Sure．You ______ in the supermarket．
| A．had shopped | B．have shopped | C．were shopping | D．shopped |
Can you believe? To raise an adopted dog, a young Australian even stayed single, __________ possible relationships with female students on campus!
| A．turning out | B．turning down | C．turning away | D．turning in |
____ David showed the report to the public surprised me．
| A．What | B．That | C．Which | D．Who |
—How much do you know about the 3D film technology?
—A little. Not until _______ the hot movie Avatar _______ something about it.
| A．did I see; did I begin to learn | B．I saw; did I begin to learn |
| C．I saw; I began to learn | D．did I see; I began to learn |
— How can I wake up so early?
— Set the alarm at 5 o’clock, you’ll make it.
| A．but | B．or | C．and | D．so |
Mr. Smith didn’t understand _____ made his son so upset that evening.
| A．what was it | B．why it was this | C．how that was | D．what it was that |