1 . ________ your blog, I would have written back two days ago.

A．If I read	B．Should I read
C．Had I read	D．If I could have read

2 . —________ you write so well?
—By reading and keeping diaries every day.

A．How is it that	B．Is it how that
C．How it is that	D．What is it that

3 . It ______ we had stayed together for a couple of weeks ______ I found we had a lot in common．

A．was until；when	B．was not until；that
C．was not until；when	D．was until；that

4 . ____ under the tree was a charming girl aged about seventeen and eighteen.

A．Sat	B．Sitting
C．To sit	D．Sit

5 . If _____ without following the doctor’s instructions, the medicine may have serious side effects.

A．taken

B．to be taken

C．taking

D．being taken

6 . ____ St Paul’s Cathedral built after the terrible fire of London in 1666. It looked splendid when first _____!

A．There followed; built

B．There following ; built

C．There followed; building

D．There following ; building

7 . _____on the grass _____singing and laughing.

A．Seated; is some students	B．Seated; are some students
C．Sitting; is some students	D．Sitting; some students are

8 . Can you explain ________ the sun goes down in the west?

A．why is it that

B．why it is that

C．how it is that

D．how is it that

9 . I promise _____ else can you find _____ better computer at such a low price.

A．anywhere; a	B．nowhere; the
C．nowhere; a	D．somewhere; ＼

10 . Every one of us must know:________we live can we save the earth.

A．by changing the way only

B．only by changing the way

C．by only changing the way

D．by changing only the way