The teacher apologized late.
A. to his students to arrive B. to his students for arriving
C. at his students to arrive D. at his students for arriving
----May I open the window to let in some fresh air?
----
A. come on! B Take care! C Go ahead! D Hold on
It took me a long time before I was able to fully appreciate what they _____ for me.
A. had done B. did C. would do D. were doing
He had a wonderful childhood, _____ with his mother to all corners of the world.
A. travel B. to travel C. traveling D. traveled
The country ,_______ cherry tree flowers ,looks _____ it is a sea of pink snow .
A. covers with… as though B. covered with… as though
C. covering with…as if D. is covered with ….as though
Why are you so anxious? It isn’t your problem .
A. on purpose B. in all C. on time D. after all
