ncers, all of _______ masks came off suddenly,gave us a great surprise.

How tall the boy is! — Yes, he is taller than __________ in his class.

You did not let me drive. If we ____in turn, you wouldn’t be so tired now.

下列句子中,没有语病的一句是（ ）

To our delight, up till now, the European Union, Japan, and Russia ________ their targets for CO2 emissions (排放)