Comrade Lei Feng is still________ in our mind.

—When are you going camping?—_____today or tomorrow. We’ll be free these days.

It is said that the gravity on Mars is only about __________ of the gravity on earth．

If you like the chicken，you may have__________you can.

— ______do millions of online users visit the home page of the government for?— To read the news and search for the information they need.