When she was in trouble, I did what I could to help her. my help, she wrote me a letter of thanks.
We should do something to _______ the plant ______ the cold weather.
I’d appreciate _______ if you would teach me how to use the computer.
John thinks it would be long ________ he is ready for his new job.
Perhaps I’m not quite fit for the job, but ________, please let me have a try.
After a long time’s hard work, he _________ Qinghua University last year.