—Did you know China is one of the oldest countries in the world?
—Yes, I did. It’s ________ than the US.
A. much older B. more older C. much elder D. more elder
--- I’m sorry I didn’t return your book on time.
--- _________. You can keep it for two more days.
A. That’s right B. You’re welcome
C. Here you are D. It doesn’t matter
--- Which one do you like_________? ---Neither, thanks.
A. better B. the better C. best D .the best
Could you speak in a __________ voice? We can hardly hear you.
A. friendlier B. louder C. softer D. lovelier
—What’s ___________ mountain in the world?
—Qomolangma. It’s 8,844.43 meters high.
A. highest B. the highest C. higher D the higher
You are not a child but _________ adult now.
A. a B. an C. the D. /