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.
| A．had been； have met | B．have been； have met |
| C．had been； had met | D．have been； had met |
We won’t forget the financial crisis and the troubles _______ has caused to the people all over the world．
| A．which | B．this | C．what | D．it |
Thanks for your kind help! We would have _________ lost the game!
| A．otherwise | B．or | C．then | D．therefore |
— What’s that noise? Is the water still running?
— Oh, my god! I ________to turn it off after I brushed my teeth．
| A．was forgetting | B．forgot | C．had forgotten | D．am forgetting |
________ himself in the newspaper, he didn’t notice what was happening．
| A．Having buried | B．Buried |
| C．Burying | D．To be buried |
I am sorry you’ve been waiting so long, but it will still be some time __________ Brain gets back．
| A．since | B．before | C．till | D．after |