选择A/B/C/D1._______are your family going this summer vacation

选择A/B/C/D
1._______are your family going this summer vacation.
-to shanghai.
a.how
b.why
c.where
d.when
2.miss white goes to the doctor's_____monday mornings
a.in
b.on
c.at
d.for
3.______morning exercises is good_______us.
a.doing,at
b.doing,for
c.do,at
d.do,for
4.the girl didn't stop crying_____her mother came back.
a.after
b.when
c.until
d.because
5.what can i do____my english?my english is too poor.
a.improve
b.improved
c.improving
d.to improve