We can see light in his office. He___________ be in his office.

He _____ have completed his work; otherwise, he wouldn’t be enjoying himself by the seaside.

(2013·高考江西卷)________one of you breaks the window will have to pay for it.

Langlang plays the piano very well. He is one of pianists in China.

Will you stay for lunch?—Sorry, ___. My brother is coming to see me. [ ]