问题

Before a problem can be solved，it must be obvious____the problem itself is.

A:what
B:that
C:which D.why;
D:why;

正确答案是：

同类题型

Beijing is ____ capital of China and it’s ____ city with many interesting places.

se friend Amy was admitted to OxfordUniversity, ______ came as no surprise.

On March 11, 2011 ______ earthquake hit Japan.

There is snow．Put on your coat．It’s cold．

The story of the movie is a lot different from what I know g so I guess it is justbased on the original novel