A. that
Đáp án A
Giải thích: where thay cho cụm danh từ chỉ địa điểm phía trước “a big old farmhouse”, đằng sau còn là một mệnh đề hoàn chỉnh “three families live together”.
The classroom windows and sliding doors (5) ________ open to the outside most of the year. The roof is a big, wooden circle. Children love to play and run on it.
It can be a very big surprise if you expect to shakes hands and get a kiss or a hug (33)_____.
Most people in the world are (35)_____ of visitors and don't mind what travellers do that seems experiencing different customs."