1．—If you eat ________ food and take ________ exercise, you’ll keep healthy. —Yes, I may lose weight.
more; more
less; less
less; more
much; more
2．My little sister is old enough to walk ________the road.
A．through
B．across
C．past
D．cross
7．According to the survey, about 70 p_______ of the students went to the library last Friday.