Spell out the word according to the sentence meaning and tip.(根据句意和提示完成单词)

1.I don't really know,I'm just g     .

2.I need one more stamp before c    my collection.

3.The children played t      in the street.

4.My English teacher asked us to c     the false sentences in class.

5.I want to       (提高)my English.?

6.You must try to improve yourg     .

7.She is too       (害羞) to speak in front of class.

8.My English teacher demanded us to write a p     when we complete a sentence.

9.English and American s     of some words are different.

10.I read Tolstoy's books in t      .

在磷酸蔗糖合成酶催化蔗糖的生物合成中，葡萄糖基的供体是（），葡萄糖基的受体是（）。