—Hey, Mike. An Indian man recently sang for 80 hours straight, setting a new Guinness world record.
—Really? It’s really a(an) __________ feat(本事).
| A.extraordinary | B.curious | C.special | D.intelligent | 
But for the help you gave me, I _______ the examinations.
| A.would have passed | B.would pass | 
| C.wouldn’t have passed | D.wouldn’t pass | 
 His income is double _____ it was five years ago.
| A.that | B.which | 
| C.as | D.what | 
Without the air to hold some of the sun’s heat, the earth at night ____ for us to live.
| A.would be freezing cold | B.will be freezing coldly | 
| C.would be frozen cold | D.can freeze coldly | 
 . _____ of you comes first will get the ticket.
| A.Which | B.Whichever | 
| C.Who | D.Whatever | 
. He hesitated for a moment before kicking the ball, otherwise he ____ a goal.
| A.had scored | B.scored | 
| C.would score | D.would have scored |