Tom was about to close the window ________ his attention was caught by a bird.
| A．when | B．if | C．and | D．till |
—Why didn’t you answer my phone at 10 am?
—I for my decayed tooth in the clinic.
| A．treated | B．was treated | C．have been treated | D．was being treated |
—Which of those electronic dictionaries do you like most?
— . They are both expensive and of little use.
| A．Both | B．None | C．Neither | D．All |
no modern technology, the Egyptians had to move each stone by hand.
| A．It being | B．There being | C．There was | D．Being |
The accident that happened at an oilfield the southeast coast of the USA has caused great damage to the environment.
| A．away | B．from | C．beyond | D．off |
I am familiar with his work and look forward to of his view on literary and artistic creation.
| A．informing | B．be informed | C．being informed | D．have informed |