On 5 December 2013, China Central Bank prohibited financial institutions from handling Bitcoin transactions, _____ to regulate the virtual currency.
| A．moved | B．to move | C．having moved | D．moving |
"Goodbye, then,"she said, without even ________ from her book.
| A．looking down | B．looking up | C．looking away | D．looking on |
The news reporters hurried to the airport, only _________ the film stars had left.
| A．to tell | B．to be told | C．telling | D．told |
The flu is believed _________ by viruses that like to reproduce in the cells inside the human nose and throat.
| A．causing | B．being caused | C．to be caused | D．be have caused |
Helen had to shout _________ above the sound of the music.
| A．making herself hear | B．to make herself hear |
| C．making herself heard | D．to make herself heard |
－CanI get you a cup of tea’
－____________ .
| A．That’s very nice of you | B．With pleasure |
| C．You can，please | D．Thank you for the tea |