C 有这一句可得Bill and Sue were brother and sister.
D 有这一句可得On Saturday and Sunday they went to their farm and help their father pick apples.B 此题依据同为上一题依据C 有这一题可得Every one of them bought a bird.A 有这一句可得The yellow one is smaller than green one
不好意思来晚了，刚才有事 保证正确率，全是认真答的，满意请采纳！谢谢