_______ to me, John would not have failed.

What about your interview _____ the famous writer–Quite good. We’ve been friends and we keep in touch _____ each other by email.

Would you mind booking me a window seat on the next flight to Beijing online— , I’m so busy now. I’ll do it later.

What happened here yesterday?—–An adventurer was walking at the foot of the mountain ______ suddenly a stone fell and hit him on the head

It’s important for us to ______ a word or a phrase according to the situation in language studies.[ ]