I think that the underlying problem is education, unemployment and bad housing.
我认为深层的问题在于教育、失业和糟糕的住房条件。
I think that the vice president was in the loop.
我认为副总统是局内人。
I think that's a very sensible idea.
我看这个主意很妥当。
In retrospect, I think that I was wrong.
回首往事,我觉得当时我错了。
I think that's my cue to explain why I'm here.
我想这就是要我解释一下我为什么到这里来。