Edward, you play so well, but I you played the piano.
| A．don’t know | B．hadn’t know | C．didn’t know | D．haven’t known |
(2012年江苏南通九校联考)When ________different cultures，we often pay attention only to the differences without noticing many similarities.
| A．compared |
| B．being compared |
| C．comparing |
| D．having compared |
(2012年潍坊市高三质量检测)A harmonious society is like a symphony or orchestra－
each person contributes a small sound，but when________with other sounds，it becomes beautiful music.
| A．combining |
| B．being combined |
| C．combined |
| D．to be combined |
(2012年河南长葛高三月考，29)He made another wonderful discovery，________of great importance to science.
| A．which I think is |
| B．which I think it is |
| C．which I think |
| D．I think which is |
—Will you help me do this?
—________，young man. You have to rely on yourself.
| A．On the way out |
| B．By the way |
| C．No way |
| D．Out of the way |
It is one of the funniest things ______on the Internet so far this year.
| A．finding |
| B．being found |
| C．to find |
| D．found |