1 . I tried to learn how to play it, but after trying for hours, I ______ that I could never make a musical sound with this instrument!

A．was convinced

B．was convincing

C．convinced

D．convincing

2 . As she turned around, there ______ Gladys Claffern.

A．stands

B．stood

C．is standing

D．was standing

3 . —Why didn't you buy any bread while doing shopping yesterday evening?
—Sorry, ______________.

A．I forget

B．I forgot

C．I had forgotten

D．I have forgotten

4 . —Oh, it’s you! I _____ you.
—I’ve just had my hair cut, and I'm wearing new glasses.

A．didn’t recognize	B．hadn’t recognized
C．haven’t recognized	D．don’t recognize

5 . It ______ last night ______ Tom saw an interesting film in Dongfeng Cinema.

A．is; that

B．was; that

C．was; which

D．was; who

6 . —Ann is in hospital.
—Oh, really? I ________ know. I ________ go and visit her.

A．didn’t; am going to	B．don’t; would
C．don’t; will	D．didn’t; will