The American young man speaks Chinese as fluently as if he______a Chinese.
A. is
B. were
C. has been
D. had been
He______killed last night if he had taken part in the surprise attack on the city.
A. would be
B. should have been
C. must have been
D. might have been
One player has won the game when______.
A. he attacks the other player's king
B. he says some Persian words
C. he says "check" to the other player
D. the other player's king can not move anywhere
According to the old rules of the game______.
A. the king had to be attacked all the time
B. the king could not move anywhere
C. the queen could move no more than one square at a time
D. the queen was the strongest piece on the board
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