--- Mum, have you seen my mobile phone?    ---_______you bought last week? I’m sorry I haven’t seen _______.

Mom, I’m old enough to wash ________ own clothes and ________. You can have a rest after work.

–I like English best. What about _______?–He thinks science is very interesting. His favorite subject is science.

— Is this Tommy’s suitcase?— No, it is not          . It is          .

---Which would you like, tea or coffee? ---___________ is OK. I really don’t mind.