A farmer has some pigs and some ducks.There are 9 heads and

选择A:farmer has some pigs and some ducks.there are 9heads and A farmer has some pigs and some ducks.There are 9 heads and a farmer has some pigs and some ducks.there are 9 headsand 2 there is a river in the picture.there are some ducks and a b There is a small bridge _ the river and some ducks are swimm 1.On the farm,there are twelve ducks and eight pigs.look!The On the farm,there are some cow,some ( ),some( ),some( )and a there are some ducks in the river There are teo ducks and a boat on the river. There ( ) a boy and some apples.A is B are There are two ducks in front of a duck and two ducks behind There are some books and a radio on the desk.