When I entered the room, I found Mary ______ at the desk ______ her homework.
| A．sat; doing | B．sitting; to do |
| C．seating; to do | D．seated; doing |
相关试题
—I’m afraid I can’t afford a ticket to the concert, so I won’t be able to go with you.
—Don’t worry. It’s my ________.
| A．pleasure | B．treat | C．business | D．invitation |
—Hi, Li Xiaoxia. What a surprise! Dad _____ you _______ so early. He’s upstairs reading. I’ll just call him.
| A．didn’t know; would come | B．doesn’t know; are coming |
| C．hadn’t known; were coming | D．hasn’t known; will come |
—Where is Lu Wenjie? 
—I have no idea．He__________ be in the library.
| A．can | B．must | C．might | D．shall |
. — You must obey every word of mine!
— _____ I don’t?
| A．How if | B．What if | C．Even if | D．Only if |
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