Nobody knows how he was murdered, but _______ people behind the scenes can guess why.
| A．a great deal of | B．a good many | C．a good amount of | D．a great many of |
The computer was used in teaching. As a result, not only_________, but students became more interested in the lessons.
| A．saved was teachers’ energy | B．teachers’ energy was saved |
| C．was teachers’ energy saved | D．was saved teachers’ energy |
Scientists also have no idea how long it will be before all wild animals in the cages _____.
| A．should be set free | B．will be set free |
| C．are set free | D．would be set free |
She brought with her three friends, none of _________ I had ever met before.
| A．them | B．who | C．these | D．whom |
What do you mean, there are only ten tickets? There _________ be twelve.
| A．would | B．should | C．will | D．shall |
On the double 11th day, my uncle’s online store has successfully sold _____ shoes as last year, that is, it can hardly make ______ progress.
| A．as many twice; worse | B．as many twice; bad |
| C．twice as many; good | D．twice as many; better |