We’ll do what we can _________ our environment.
#49518
A
protect 
B
to protect 
C
be protected 
D
be protecting
推荐题目
My father always makes me _______.
#50090
A
laughing
B
to laugh
C
laugh
D
laughs
After finishing_______his homework, Tom decided______a walk in the park.
#49883
A
to do;to take
B
doing; taking
C
doing; to take
D
to do; taking
She tried ________ Chinese in English.
#51095
A
to not speak
B
not to speak
C
not speaking
D
didn’t to speak
The city in Shandong has become famous__________kites.
#49347
A
to making
B
for making
C
make
D
makes
I find it very hard           the question.
#50173
A
to answer
B
answers
C
answering
D
answered