已知，是两条不同的直线，，，为三个不同的平面，则下列命题正确的是（   ）

A：若∥，，则∥；

B：若∥

A：____I need your help．

B：OK，Mom．____

A：I have to buy some milk for your little sister．____

B：No problem!

A：I'll be back in half an hour．

B：I see．____

A：Yes，but don't make her cry(哭)．

B：OK．

A．What can I do for you? B．What are you doing? C．Could I play games with her? D．Could you please not watch TV now? E．Why do you look so tired? F．Could you please look after her for a few minutes? G．Could I do the dishes?