The number of people invited _____ fifty, but a number of them _____ absent for different reasons.
| A．were; was |
| B．was; was |
| C．was; were |
| D．were; were |
Getting your students ________ in classroom activities is vitally important.
| A．trapped | B．devoted | C．stuck | D．involved |
Mr. Tiger insisted that he _______ the money back to his boss but his boss said that he didn’t receive it.
| A．should pay | B．had paid | C．pay | D．would pay |
_______ in the leg made it impossible for him to walk to school every day.
| A．Being injured | B．Injured | C．Having injured | D．Injuring |
We were stuck at the airport because of the heavy fog, otherwise we ________ here in time for the conference.
| A．arrived | B．had arrived |
| C．would arrive | D．would have arrived |
—It is said that he is focusing on another book on space exploration. When will it come out?
—It is _______ next year.
| A．about to be published | B．surely to be published |
| C．due to be published | D．going to publish |