He is not easy-going, but his trust in his friends will last forever once _______.
Having compared with the other design, I found this one was _______ that one.
You are likely to be _______Peter. Why not make an apology to him?
I often visit my parents, who live in the countryside whenever_______.
Mike _______ in touch with his former schoolmates, who had been living there for ages as soon as he arrived in America.
---Will you come to my office when you _______ your work.? ---Sure