.
----Is there anything wrong, Bob? You look sad.
----Oh, nothing much. In fact, I ____ of my friends back home.
| A．have just thought | B．was just thinking |
| C．would just think | D．will just be thinking |
— 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 |
—Hey , Mr．Smith , you are wanted on __________phone ．
—Who is calling ?
—___________Mr．Green ．I don’t know he is ．
| A．不填；A | B．the ；不填 | C．the ; A | D．不填；不填 |
_____, he always tries his best to complete it on time.
| A．However the task is hard | B．However hard the task is |
| C．Though hard the task is | D．Though hard is the task |