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

Some teenagers turn a deaf ear to their parents’ advice, ________ they know it does good to them.

Mike, what did your monitor say just now? —-Every boy and every girl as well as teachers who to visit the museum asked to be at the school gate before 6:30.

Everything ______, his plan seems more practical.

Because of the snow he drove just 289 kilometers in 5 hours, so thespeed was 56kph. [ ]