In the past, officials have criticized American intelligence services, __________ they relied too heavily on technology.
| A．to say | B．saying | C．said | D．say |
There was a terrible noise _____ the sudden burst of light.
| A．followed | B．following | C．to be followed | D．being followed |
If a thing is worth ______, it must be well ______.
| A．doing; done | B．to do; doing | C．to do; done | D．being done; doing |
I, who ____ your teacher, will try my best to help you with your English.
| A．is | B．are | C．be | D．am |
All that can be done _______.
| A．has been done | B．has done | C．have done | D．were done |
The man couldn’t _____the fact that the lost watch was found in his house.
| A．explain for | B．account for | C．amount to | D．refer to |