填空题
was writing
It () three years since I joined the air force. 【be】 我...
填空题It () three years since I joined the air force. 【be】 我加入空军已经三年了。
I () to see a film with my brother last night. (【go】 我...
填空题I () to see a film with my brother last night. (【go】 我昨晚和哥哥去看电影了。
Please () the window to let some fresh air in. 【open】 ...
填空题Please () the window to let some fresh air in. 【open】 请打开窗户通通气。