问题

The reason __she didn’t come to school was_she had to look after her sick mother.

A:because ; why
B:that ; because
C:why ; that
D:which ;that

正确答案是：

同类题型

Please __________ the tree. Can you __________ any apples on it

The discovery of new evidence led to ．

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you make a plan，you,d better_____the advantagesand disadvantages of it．

I think chocolate is good for your health.—________.