John and I _____ friends for eight years. We first got to know each other at a Christmas party. But we _____ each other a couple of times before that.
20.______ that caused him to serve dinner an hour later than usual.
19 “Who are making so much noise in the garden?” “_______ the children.”
18. It was because of English girlfriend, believe it or not, ______ his English improved so greatly.
It was lack of money, not of effort, _____ defeated their plan.
I don’t know _____makes her afraid of having her business discussed.