I regret _____ you that your application has been refused.
I regret \_\_\_\__ you that your application has been refused.
已经
I remember _____ to the zoo by my father when I was little.
I remember \_\_\_\__ to the zoo by my father when I was little.
Mr. Green _____ my letter, otherwise he would have replied before now.
Mr. Green \_\_\_\__ my letter, otherwise he would have replied before now.
_____ the watch been repaired yet? I badly need it.
\_\_\_\__ the watch been repaired yet? I badly need it.
By next month they _____ in the country for eight years.
By next month they \_\_\_\__ in the country for eight years.
I _____ writing the article by the time you get back.
I \_\_\_\__ writing the article by the time you get back.
You’ve already missed too many classes this term. You _____ two classes just last week.
You’ve already missed too many classes this term. You \_\_\_\__ two classes just last week.