I,
1.
play games than play video games
2.
a slower and more careful driver than I am
3.
a two-week trip
4.
to keep our school clean, green and attractive
5.
was lazy, he did not pass the examination
II,
1.
spent half an hour walking
2.
among the greatest football player
3.
had better not go
4.
the age of your daughter
5.
no use persuading
$@Lucy$