Not until recently ______the development of tourist-related activities in the rural areas.
they had encouraged
had they encouraged
did they encourage
they encouraged
_________ to too much sunlight will do harm to your skin.
()There is no greater pleasure than lying on my back in the middle of the grassland, _____at the night sky.
__________ the program , they have to stay there for another two weeks.
What worried the child most was _______ to visit his mother in the hospital.
Clearly and thoughtfully________, the book inspires confidence in students who wish to seek their own answers.