______nature reserves _______us learn more about protecting animals.
#48781
A
Studying ; help
B
Studies ; helps
C
To study; helping
D
Studying; helps
推荐题目
—I’m sorry I forgot the letter for you! I’m really busy these days”—It doesn’t matter, I’ll post it myself.”
#51123
A
to post
B
posting
C
post
D
posted
Mr Bean enjoys stories and often makes us .
#49125
A
to tell, to laugh
B
tells, laugh
C
telling, laugh
D
telling, laughing
—What should I do ,doctor?— ___healthy, you should take more exercise.
#50801
A
To keep
B
Keep
C
Keeping
D
Kept