( )1. The sports meeting _______ if it _______ tomorrow.
A. will put off; will rain B. put off; will rain
C. will be put off; rains D. put off; rains
( )2. Listen! Someone _______ in the next room.
A. sang B. singing
C. is singing D. has sung
( )3. The teacher told us that the sun _______ bigger than the earth.
A. is B. was C. has been D. will be
( )4. His grandfather _______ for three years.
A. died B. was dead
C. has been dead D. has died
