-----Why did you buy a radio? -----__________English.
#48800
A
Learn
B
Learning
C
To learn
D
Be learning
推荐题目
There is a bird        in the sky.
#50711
A
fly
B
flying
C
flies
D
to fly
—It’s necessary ____ our environment(环境).  —I agree with you. 
#50553
A
protect(保护)
B
protecting
C
to protect
D
protects