1.单项填空

（1）Greenland, _________ island in the world， covers over two million square kilometres.

A.it is the largest B.that is the largest

C.is the largest D.the largest

答案：D

（2）How beautifully she sings! I've never heard _________.

A.the better voice B.a good voice

C.the best voice D.a better voice

答案：D

（3）As we know, Canada is _________ country in the world.

A.a second larger B.the second largest

C.the second large D.the second larger

答案：B

（4）-Is the flower beautiful?

-Yes, at _________ it's _________ the one I bought yesterday.

A.least; as bad as B.least; no better than

C.least; not better than D.least; no worse than

答案：D

2.not ... until 直到......才......

【典型例句】