北京的春天_____几月______几月? ( From which month to which month is Beijing's Spring?)

(a)  

(a)   大卫的爷爷奶奶去了北京、西安和上海 .（ Last time, David's grandparents went to Beijing, Xi'an and Shanghai)

云南的冬天_______，夏天________,还住着许多________。（In Yunnan, it's not cold in winter and not hot in summer. A lot of Ethnic Minority live there. ）

(a)  

谢谢你的 (a)   （ Thank you for your advice)

放暑假的时候，你打算去 (a)   吗？ ( Are you planning to travel during summer vacation?)

北京的秋天很 (a)   (It's cool in fall in Beijing)

有些中国的城市夏天比上海 (a)   热。 ( In summer, some cities are even hotter than Shanghai)

(a)   我们不能出门. (We can't go out last month)

(a)   我们不能出门。（ We can't go out this month)

(a)   我们也不能出门。( We can't go out next month, either)