*Change into the interrogative form:
Ex : I went to the zoo yeaterday
=> Did you go to the zoo yesterday?
1.Ba taught Mary Vietnam.
=>.................................................?
2.He sent Tom a postcard.
=>........................................?
3.They returned home at 10 yesterday.
=>.............................................?
4.My mother bought me a new bike .
=> ..............................................?
5.We studied English 5 years ago.
=>............................................?
6.She received many gifts last .
=>.........................................?
7. I met her at the meeting last week.
=>.............................?
8.They lived in this town in 1990
=>...................................?
9. I was at home last night.
=>...........................?
10. they were in Tay Ninh in 2000.
=>......................................?