303. I think you should _______ the doctor about your arm.
| A．pay a visit to | B．give a visit on | C．offer visit to | D．make a visit on |
.
Susan started to clean the room; __________Lily was preparing lunch.
| A．however | B．but | C．meanwhile | D．when |
.
Had you joined the caht room ten minutes ago, you would have known what we _______about then.
| A．had talked | B．have talked | C．talk | D．were talking |
.
.It is too bad for someone in such a high _______ in the government to behave badly in public.
| A．position | B．situation | C．profession | D．condition |
.
----Why are your hands so dirty?
----I ____________in the garden.
| A．was working | B．have worked | C．worked | D．have been working |
.
If I can help ____, I don’t like working late into the night.
| A．so | B．that | C．it | D．them |