Having proper motivation is not _______ —it is another key to success.
| A．artistic | B．enterprising |
| C．investigate | D．optional |
．Jane had prepared carefully for her English examination so that she could be sure of passing it on her first____________．
| A．occasion | B．attempt | C．purpose | D．spot |
It was not until she had arrived home__________her appointment with the doctor ．
| A．did she remember | B．that she remembered |
| C．when she remembered | D．had she remembered |
— Have you ever visited the Opera House?
—Yes．When I was in Sydney, I ______ it twice．
| A．have visited | B．visited |
| C．had visited | D．would visit |
— Did you pass the driving test?
—No．I ______ it, but I had little time practicing．
| A．could have passed | B．must have passed |
| C．can’t have passed | D．shouldn’t have passed |
A cup of water_________you will feel better．
| A．or | B．but | C．so | D．and |