- What ________ he do?
- He ________ pears on the farm.
A:does; pick
B:did; picks
C:does; picked
D:did; picked
下列各句中,没有语病的一句是 ( )
已知a、b、c分别为△ABC的三个内角A、B、C所对的边,若a=1,b=3,A+C=2B,则sinA= ( )