The _________ of Lei Feng encourages us to serve the people all the time.

下列各句中，没有语病的一句是

_____ do you go to the zoo with your brother —Three times a month.

Not only Jim but also his parents ______ a few placesof interest since they came to China.

It is important to have your eyes examined regularly tocheck for any sign of eye disease that may not have any ________