It is necessary _____ something to protect our environment.
#50188
A
do
B
to do
C
does
D
doing
推荐题目
You are so hungry. Why _______ have something __________?
#50725
A
not you, to eat
B
don’t you, eat
C
not to, to eat
D
don’t you, to eat
They had fun ______ games in the park.
#50022
A
play
B
playing
C
plays
D
played
I have a wonderful friend _______Kitty.
#49035
A
name
B
names
C
naming
D
named
 She is heard_______ every day in her room.
#49195
A
sings
B
sing
C
to sing
D
singing