People felt ________impossible for man to fly into outer space some years ago.
A.that B.what C.it D.this
—Could I use your computer for a few moments，please?
—________.I'm not using it myself.
A.Come on B.It depends
C.Go ahead D.That's great
—How was your recent trip to Sichuan?
—I’ve never had ________one before.
A.a pleasant B.a more pleasant
C.a most pleasant D.the most pleasant
My father had longed to play music since childhood, but his family was poor and couldn’t _____ lessons.
A.miss B.afford C.select D.understand
In Africa, educational costs are very low for those who are_______enough to get into universities.
A.successful B.fortunate C.proper D.happy
It is the most instructive lecture that I ________ since I came to this school.
A.attended B.had attended
C.am attending D.have attended
