Yangzi River is the first _______ river in China. A. bigger B. big C. biggest
―Congratulations, Jane, you have won the first prize in the physics competition. ―Thank you, Mr Green. I can’t make such great __________ without your help.
The water in the river nearby will be dirtier than before if nothing __________.
―Is Tom coming to the concert this evening? ―No, he _________ be at the concert. He _______ abroad.
Foreign visitors will get lost easily in new Taixing ________ they have a map.
―What can I do for you? ―__________.