We should tell hunters _______tigers.
--- Could you please tell me ______?--- Walk along the road until to the end and you’ll see it on your left.
-- I’m terribly sorry that I’ve kept you waiting for so long.-- ____________.
I think ____ not difficult ____ English every morning.
____ is said that ____ tourists visit the Great Wall every day.
Great changes ________ since we entered E-times. And the computer is widely used throughout the world.