—It’s necessary ____ our environment(环境). —I agree with you.
#50553
A
protect（保护）
B
protecting
C
to protect
D
protects
推荐题目
“Would you mind me _______ here next to you?” “ ________. Because you seem to have a fever(发烧 ).”
#50251
A
to sit; Better not
B
sitting; Better not
C
to sit; Not at all
D
sitting; Not at all
The young man rushed into the house ______ the baby in the fire.
#50882
A
saving
B
and save
C
to save
D
saved
When I was in primary school, I had trouble ______complete sentences.
#51097
A
to make
B
made
C
making
D
make