弄不清楚
2.United front policy is class policy and the two are inseparable; whoever is unclear on this will be unclear on many other problems.
4.Of course, after two or three years of work we may gain a clearer understanding of each individual nationality and we may be able to clarify questions that have long remained a mystery.
5.Honestly, I understand very little.
8."I'd (I would) have to come to grips with the idea of no fire alarm boxes," said First Deputy Mayor Stanley Brezenoff, who will review the fires officials' analysis. "I grew up with them."
9.It is difficult to tell which gives some couples the most happiness, the minister who marries them or the judge who divorces them.
10.I don't know why such a thing could happen? It's necessary to clear it up.
