The TV sets made by our factory sell best, but 10 years ago no one could have guessed the place in the markets that they _______.
| A．were having | B．had had |
| C．were to have | D．had |
The concert _______ many foreign students were invited was a feast for the eyes.
| A．for which | B．to which | C．in which | D．on which |
Only __ as an interpreter __ how important it was to practise speaking English.
| A．when did I work...I realized | B．when did I work...did 1 realize |
| C．when I work...did I realize | D．when I worked...did I realize |
BP will continue to be focused on making sure that the costs ________with oil spill cleanup in the Gulf of Mexico are paid.
| A．covered | B．filled | C．occupied | D．associated |
. Common people always hold the view the experts say is right.
| A．what that | B．that what | C．that | D．all which |
Unless ________ , the murderer is likely to commit similar or further offences.
| A．to arrest | B．arrested | C．been arrested | D．arresting |