Almost all of his time ______ experiments, he has no time to visit his parents.
A. devoted to do B. devoted to doing
C. devoting to doing D. is devoted to doing
---Look, our headmaster is over there, playing basketball with some students of our class.
--- Oh, he must be ________ to his students.
A. possible B. valuable C. available D. accessiblee
—Have you seen my dictionary?
---- Is it _______ you bought last week? Perhaps _______ is on your bed.
A. one; that B. the one; it C. the; there D. one; here
Your niece is very strict and ______ worth teaching, but your nephew is not. Look, he is now ______ asleep in class.
A. well; fast B. much; very C. very; fast D. well; very
Our school has used computers in teaching for ten years. As a result, not only______, but students become more interested in their lessons.
A. has teachers’ energy been saved B. saved was teachers’ energy
C. teachers’ energy has saved D. was saved teachers’ energy
I arrived home at midnight, _______ my parents had been waiting for nearly three hours.
A. at that time B. by that time C. at which time D. by which time
