Three young men have been arrested because they were caught ___ an old lady last night.
| A．robbed | B．to rob | C．rob | D．robbing |
The article raised doubts _____ the suspect was really guilty.
| A．that | B．if | C．whether | D．how |
We regret _____ you that your application has not been approved.
| A．to inform | B．informing |
| C．having informed | D．to be informing |
--I didn’t get time to ask you why you looked so upset at the party.
-- Oh, a lot of unexpected things _____.
| A．arose | B．rose | C．were raised | D．were lifted |
Massive amounts of information _____ available because of the current policy to promote the free flow of speech.
| A．is | B．are | C．was | D．were |
The professor put forward three issues, none of _____ we had ever done any research into before.
| A．them | B．which | C．what | D．that |