A/B/C/D
1.whendidyourtoothachestart?
_______
a.fortwodays
b.twodays
c.twodaysago
d.twodaysbefore
2.sheshould______adentistifshehasatoothache.
a.lookat
b.watch
c.look
d.see
3.youshouldn't______ababyaloneinthehouse.
a.toleave
b.leave
c.leaving
d.left
4.weneedabalanceofcoolingyin____andyang.
a.or
b.but
c.and
d.yet
5.what's______withyou?
a.matter
b.thewrong
c.trouble
d.wrong
我的选择
c,d,b,c,d
YIN=阴
YANG=阳