—Hi, Johnson, any idea where Susan is ?
—It’s class time, so she________in the classroom now.
| A．can be | B．must have been | C．might have been | D．must be |
Either the judge or the lawyers ______ wrong on the case at that moment.
| A．is | B．are | C．were | D．was |
When he returned , he agreed to the publisher’s request _______ he should write a book for boys based on the life he experienced.
| A．when | B．that | C．which | D．why |
Look ! There are so many mistakes in your composition . You ____ have paid attention to it.
| A．may | B．must | C．can | D．should |
At the conference , political leaders from many countries promised to work together to defend the world ________ terrorism and other threats.
| A．for | B．without |
| C．against | D．beyond |
---Alice had an accident on her way to school yesterday．
--- ? She is always careful．
| A．How come | B．Why not |
| C．So what | D．What for |