________achievement, China was a great success in launching Chang’eⅡ.[ ]

I spent the whole day repairing the motorbike. The work was ____ simple.

_______, Sharon couldn’t find her lost wallet.

Mary has just got an invitation to theparty. She is now in a __________ as to whether to go there in her old dress orto stay at home.

下列各句中，没有语病的一项是（ ）