---Why are you still here? Everybody has gone to attend the lecture by the president.
--Oh, I ___________ about it!
A. wasn’t informed B. hadn’t been informed
C. haven’t informed D. didn’t inform
Mr. Duncan raised an unnecessary question __________ he then failed to find an answer.
A. to which B. for which C. with which D. by which
—What do you think of his speech at the court?
—Er..., sorry, I ________ about something else.
A. had thought B. thought
C. was thinking D. have been thinking
We still remember once _________ round the famous tower when we were young.
A. having taken B. to be taken
C. having been taken D. to have taken
----Marx looks nervous.
----So __________ you if you had so fierce a competition.
A. do B. did C. will D. would
_________ caused the accident is still a mystery.
A. How B. What C. That D. Where
