问题

John and I _____ friends for eight yearsWe first got to know each other at a Christmas partyBut 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
B:have been; have met
C:had been; had met
D:have been; had met
正确答案是:
同类题型
Not until World War II ______ to use new chemicaltechniques to purify penicillin.
What he said sounds ____. I agree with his opinions.
The fire _______ in the hotel around midnight last Friday. Luckily, it was put out soon.
I suppose we’ll go to plant trees tomorrow.— Sounds great! That’s a lot of fun. I’d like to you.