—What happened over there?—They argued ________ the waiter ________ the price of the meal.

We set off _______ the Three Gorges _______ a beautiful afternoon from Fu Ling.

Some doctors were sent t?the front where medical workers were ＿＿＿. 

I like Mr. Miner’s speech; it was clear and       the point. 

 First you should be confident      yourself      it .