1Mark hasn’t received a letter from his parents _ _ _.
2.He wondered _ _ _ _ _ _ she liked the dress he gave her on Valentine’s Day.
3.My father taught me how to give first _ _ _ for minor burns at home.
4. Both Lan and Huong are not old enough to take care of them_ _ _ _ _ _.
5. Mr Green bought a(n) … so that he could send or receive documents.
A. fax machine B. public phone C. telephone directory D. answering machine