But for their help，we ______ the program in time.
| A．can not finish | B．will not finish |
C．had not finished | D．could not have finished |
The judge made the final decision after listening to the opinions of each party ______.
| A．having involved | B．to be involved |
| C．involving | D．involved |
True friendship is like sound health, whose value is seldom known it is lost.
| A．when | B．though | C．until | D．unless |
People ______ long distances frequently have to decide whether they would prefer to go by land, sea or air.
| A．to travel | B．travelled | C．travel | D．travelling |
______ your plans look good, you still need to do some revision work on it.
| A．If | B．Once | C．Although | D．Since |
The prices of houses ______ because the demand of them become more and more great.
| A．are rising | B．rise | C．had risen | D．have been risen |