写出同义句，一空一词
Although British English is different from American English in pronunciation, people from the two countries have no difficulty understanding each other.
Although British English             American English in pronunciation, people from the two countries have no difficulty understanding each other. 
White has always been a symbol of purity(纯洁) in Western cultures.
White has always      purity in Western cultures.
At first, we planned to r:ravel in Tibet but then we found we were too busy to go.
    , we planned to travel in Tibet but then we found we were too busy to go.
You can make this problem easy by dividing it into two.
You can      this problem by dividing it into two.
We waited at the airport for five hours, and at last our flight left at four in the afternoon.
We waited at the airport for five hours, and        our flight left at four in the afternoon.