Everyone knows that China is famous __________ the Great Wall in the world.[ ]

昨日重现二———特殊句式(倒装、强调等)So sudden _____that the enemy had no time to escape .

You praise your son. He works harder than before. —Thanks, I will.

When did you become a volunteer for the elderly?– Two years ago. I this group since then.

The daytime of the summer is longer than _____ of the winter.