—The pet dog in your hand is very nice. Is it （）.
—Yes, but I'll give it to my friend, Lucy, as （）birthday present.

单项选择题The Changjiang River is the （）river in Chin

a.A. long
B. longest
C. short
D. shortest

单项选择题My grandpa （）for a walk after dinner every day.

A. went
B. goes
C. is going
D. go

单项选择题—We know there are lots of ways to avoid getting H1N1. —Yes, but in a word, we should care for our health at any time. ( )