Edward, you play so well. But I_____________you played the piano.
| A．didn’t know | B．hadn’t known | C．don’t know | D．haven’t known |
________ work has been done to improve the people’s living standard.
| A．A large amount of | B．A large number of | C．A great deal | D．A great many |
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 it | D．I think which is |
Most villagers agree that horses are far more pleasant _______ than tractors, but they are less efficient.
| A．looking at | B．to look at | C．to be looked at | D．being looked at |
—Well, Randy is not quite ready to make a decision yet.
—So, ______, we have to wait, right?
| A．in other words | B．on the other hand | C．in particular | D．above all |
The situation is very serious, even if the government tries to pretend ______.
| A．furthermore | B．otherwise | C．actually | D．therefore |