It was not until he arrived at the office_____ realized he had forgotten the key.
A. and he B. when he C. that he D. he
You can’t imagine _______ when they received those nice Christmas presents.
A. how they were excited B. how excited they were
C. how excited were they D. they were excited
It is difficult for us to _________ a conversation with so much noise around us.
A. communicate with B. carry on C. set up D. bring up
____ of the land in my hometown ____ covered with trees and grass.
A. Two-fifths; is B. Two-fifth; are C. Two-fifth; is D. Two-fifths; are
I failed again in the examination and only then _____ how much time I had wasted.
A. I realized B. I had realized C. did I realize D. had I realized
She knows so much about England. She ________ there before.
A. must be B. must have been C. must live D. must have lived in
