问题
Not until recently _______the development of tourist-related activities in the rural areas.
A:had they encouraged
B:they had encouraged
C:they encouraged
D:did they encourage
B:they had encouraged
C:they encouraged
D:did they encourage
正确答案是：
同类题型
He plays_______ piano for 30 minutes every evening, so she can play it very well.
Doris’ success lies in the fact _______she is co-operative and eager to learn from others.
Focused on your heart asks you to do, you’ll realize your dream one day
No one knows exactly when the first peoplearrived in _______ is now called California.