—We didn’t find Smith attending the lecture.—No one _______ him about _______ a lecture the following day.
________ is a very popular sport in summer.
John failed in the exam, ________he had prepared a lot for it before.
—______ have you studied English? —For six years.
Nuclear radiation is said __________ the biggest health challenge in Japanese Earthquake over the past few months.
They must have been enjoying themselves there,or they __________ so long.