1) should
2) practice
3) a week
4) probably
5) spend summer vacation
6) Economics
7) interesting
8) and also
9) dislike
10)
always
11)
have
to
12)
the
future
13)
find
14)
usually
15)
once
in a while
16)
drive
me home
17)
however
18)
convenience
store
19)
has
never borrowed
20)
give
it a try
