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Wouldn’t it be ____ wonderful world if all nations lived in _____ peace with one another?      A.a; /        B.the; /          C.a; the        D.the; the

Great changes have taken place in ________ 1990’s.
  A./                B.a                C.the                D.an

________ Pacific Ocean is ________ largest of all.
  A.the; a        B./; the        C.the; the        D.a; /

I heard somebody playing ________ piano in ________ next room.
  A.a; a                B.the; the                C.a; the                D.the; an

—If you don’t like the red coat，take the blue one.
  —OK，but do you have ________ size in blue? This one is a bit tight for me.
  A.a big                B.a bigger                C.the big                D.the bigger

Many people are still in ________ habit of writing silly things in ________ public places.       A.the; the        B./; /        C.the; /                D./; the

I don’t like talking on ________ telephone; I prefer writing ________ letters.
  A.a; the                B.a; /        C.the; the        D.the; /

—Where is Jack?
  —I think he is still in ________ bed，but he might be in ________ bathroom.
  A./; /        B.the; the        C.the; /                D./; the

She is ________ newcomer to ________ chemistry but she has already made some important discoveries.   A.the; the        B.the; a           C.a; /        D.a; the

_____ Einsteins could not pay for _____ advanced education that young Albert needed.      A.The; the        B.A; a        C.An; the        D.The; an