38．Please call Mary ___ 431-5875．

    A．at                        B．of                        C．／

37．－Let's play _____ soccer．－That sounds great．

    A．a                         B．／                        C．the

36．－______ you ______ a computer?－Yes，I do．

    A．Do，have            B．Are，have            C．Can，have

35．－Peter，where are you?－I'm _______ my room．

    A．on                       B．in                         C．under

34．－Sally，______ you bring my math book to school?－OK，Tom．

    A．call                     B．are                       C．do

33．－Are those your friends?－No，________．They are his friends．

    A．He isn't                B．they are                C．they aren't

32．－What's that in English?－_____ a backpack．

    A．It's                      B．it's                        C．Its

31．－_______ do you spell PEN?－P―E―N．

    A．How                   B．What                    C．Where

30．－Is this your pen?－Yes, ______________.

    A．this is                  B．it is                      C．he is

29．This is my friend．__________ name is Tony．

    A．His                     B．Your                    C．Her