题目内容：

单句语法填空

1._________ is a pity that we can't go to Hainan for a trip this winter holiday.

2.I had neither a raincoat nor an umbrella. That is_________I got wet through.

3.Exactly_________the potato was introduced into Europe is uncertain, but it was probably around 1565.

4.I'd like to start my own business—that's_________I'd do if I had money.

5._________ fashion differs from country to country may reflect the cultural differences from one aspect.

6.Why not try your luck downtown. Bob? That's_________the best jobs are.

7.Every year,_________ makes the most beautiful kite will win a prize in the Kite Festival.

8.Great changes have taken place in that school. It is no longer_________it was 20 years ago, when it was so poorly equipped.

9._________ makes the book so extraordinary is the creative imagination of the writer.

10.The question is_________they will support the plan.