The fields where crops used to be grown ________ for building now.
| A．have used | B．have been used |
| C．are being used | D．are used |
In recent years much more emphasis has been put______ developing the students productive skills.
| A．onto | B．in | C．over | D．On |
_____ of water makes Death Valley a desert, but it is by no means devoid.
| A．Lacking | B．Being lack |
| C．Because of lack | D．Lack |
_____ their real economic situations, they got some relief fund from the government.
| A．Considering | B．Considered |
| C．Having been considered | D．Being considered |
No matter how frequently _____ the works of Beethoven always attract a large number of people.
| A．performing | B．performed |
| C．to be performed | D．being performed |
I heard that you really had a wonderful time at John's birthday party, _____?
| A．didn't I | B．didn't you | C．hadn't you | D．will you |