The professor explained this theory so clearly that this phenomenon was easy enough ________.
A. for us to work out B. working out
C. for working out D. to working out
—Mike, our team will play against the Rockets this weekend. I am sure we will win.
—_________.
A. Congratulations B. Cheers C. Never mind D. Good luck
He has devoted himself __ mankind.
Robert is said ____ abroad, but I don’t know what country he studied in.
A. to have studied B. to study C. to be studying D. to have been studying
Wang Gang is considering buying a computer, is considered to be a great help in our work and study.
A. as B. which C. that D. what
When we climbed up to the top of the mountain, we were all ___________.
A. out of the breath B. short of the breath
C. out of breath D. short of breaths
