如图是植物有性生殖过程示意图，请据图回答．
A：Wow! What a great model plane! Is it yours，Jack?
B：Yes，it's mine．
A：____
B：For two days．
B：At Green Store。
B：It's six dollars．
B：I've given it to Peter．
B：Because he likes it a lot．
A．How much is it?
B．Why did you give it to Peter?
C．How long have you had it?
D．Where did you buy it?
E．Why are you selling it?
F．Where's your old model plane?
G．Can I have a look at your old model plane?
对下列病句修改不正确的一项是（ ）
24×56= ____
