12. This is the first time I (ever /eat)                                this kind of food.(1 Point)

13.The children (be/ not)                         at home last weekend.(1 Point)

14.The police (arrest)                  two people early this morning.(1 Point)

15.They (clean)                            the car. It looks new again.(1 Point)

16.John (read) _________________________ the letter from Mary already.(1 Point)

17.Nancy (be) ______________________ to Viet Nam several times.(1 Point)

18.When (your father/ give up) ________________________ smoking?(1 Point)

19.My pen isn’t here any more. Someone (take) ________________________ it already.(1 Point)

20.The Greens (be) _________________________ to many countries in the world so far.(1 Point)

21.I ____________ hundreds of e-mail in my life. (write)

(1 Point)