共50条信息
Though_________to see us, the professor gave us a warm welcome.
A.surprising B.was surprised C.surprised D.being surprised
Some of you may have finished unit one. _____ , you can go on to unit two.
A. If you may B. If you do C. If not D. If so
Every evening after dinner, if not from work, I will spend some time walking my dog.
A. being tired B. tiring C. tired D. to be tired
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