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
We do meet now and then, but not ________.
A. freely B. commonly
C. regularly D. presently
I need some blue ink today but there is ________ at hand.
A. not B. nothing C. a little D. none
I was about to go to bed ________ there was a knock at the door.
A. while B. when C. as D. suddenly
—Be careful not to drop the Ming Dynasty vase.
—Yes, we can’t be ________.
A. too careful B. very careful
C. too careless D. careless enough
They asked him to tell them everything ________ he saw at the front.
A. what B. that C. which D. where
