Everyone should make a contribution the environment.
#60222
A
to protect
B
to protecting
C
protects
D
protected
推荐题目
—I’m sorry, Mr. Wu. I my homework at home.—Don’t forget it to school this afternoon.
#53571
A
left; take
B
left; to take
C
left; to bring
D
forgot; bringing
— Excuse me, would you be kind enough to me your bike? — Sure. Here’s the key.
#54273
A
return
B
borrow
C
keep
D
lend
Mum ________ clothes, so I have to look after my younger sister.
#54056
A
washes
B
is washing
C
washed
D
was washing