问题补充:
We had to be patient because it some time we got the full results.
A. has been;since
B. had been;until
C. was;after
D. would be;before
答案:
A. has been;since
B. had been;until
C. was;after
D. would be;before
解析:D
解析在“it+be+一段时间+before/after/since+从句”句型中,before从句中的动作经过一段时间后才会实现;after从句中的动作发生后已经过去了一段时间;since从句中的动作完成后到现在已经有一段时间了。结合题意可知,答案为D项。