It is said that the gravity on Mars is only about __________ of the gravity on earth.
Lucy is so kind that she often gives me a when I’m in trouble.
--How long can I your bike? --For one week. But you mustn’t it to others.
--Excuse me. How can I get to the museum? --Follow your nose. It’s only about 250 meters on the left. You miss it.
--Mike, do you know ? --Sorry, I don’t have a watch.
,we’ll go for a picnic next week.