I _____ writing the article by the time you get back.
I \_\_\_\__ writing the article by the time you get back.
已经
By next month they _____ in the country for eight years.
By next month they \_\_\_\__ in the country for eight years.
_____ the watch been repaired yet? I badly need it.
\_\_\_\__ the watch been repaired yet? I badly need it.
Mr. Green _____ my letter, otherwise he would have replied before now.
Mr. Green \_\_\_\__ my letter, otherwise he would have replied before now.
I remember _____ to the zoo by my father when I was little.
I remember \_\_\_\__ to the zoo by my father when I was little.
I regret _____ you that your application has been refused.
I regret \_\_\_\__ you that your application has been refused.
怎样理解文中“我开始把村庄像糖一样含在嘴里，稍不留神，香甜就脱口而出”这句话？
怎样理解文中“我开始把村庄像糖一样含在嘴里，稍不留神，香甜就脱口而出”这句话？
—Did you catch the first bus this morning?—No. It had left the stop _____ I got there.
—Did you catch the first bus this morning?—No. It had left the stop \_\_\_\__ I got there.