Be quiet! The students a physics test in the next room.

Bob has gone to California.— Oh, can you tell me when he ______?

If we work with a strong will, we can overcome any difficulty, ＿＿＿great it is

The Great Wall is one of man-made wonders in the world.

Excuse me, could you tell me — Sure, Bus No. 2 will take you right there.