One of the most important questions they had to consider was _________ of public health.
A. what B. this C. which D. that
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
