一、单项选择（共20小题；每小题1分，满分20分）
从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。
1. —This is _______ film I’ve told you about several times.
—It’s great. I’ve never seen such _______ wonderful film before.
A. a; a B. the; the C. the; a D. a; the
2. The question is ________ that nobody can answer it.
A. very hard B. so strange C. strange enough D. too difficult
3. ________ helps provide food, houses, medicine and education for poor children.
