选择括号内恰当的单词或词组填入空白处，使句意完整、正确。

小题1:—Anna looks happy, she _______(succeeds,fails)in the match

—We are proud of her.

小题2:—What’s the matter?

—I have some_______(education,difficulty) in math.

小题3:—Sandy doesn’t do well in English.

—Yes,she is_______(weak,week)in English

小题4:The old man often _____(prints,provides)the poor children with clothes.

小题5:With the ________(development, develop) of China,children can get a good education.

铁碳合金常温下的相只有铁素体和渗碳体两种。