—Could you tell me ________?
—By reading as many English stories as possible or keeping a diary in English.
A．how can I improve my English writing skill
B．how I could improve my English writing skill
C．how I can improve my English writing skill
Everyone knows that a desk is made __ wood and paper is made__ wood too.
A. of , of B. of , from C. from, of
I’ m sure I can make myself _____, because I have improved my English greatly.
A. understand B. understanding C. Understood
The river has become much ______ than before because of the waste water.
A. dirty B. dirtier C. Dirtiest
----Do you know how the accident _______?
----Sorry, I don’t know.
A. come out
B. come into being
C. come about
-----I wish I _____ go into space some day.
----- I hope your dream _____ true.
A. could , will come
B. can , came
C. can , will come