We must do everything we can _________ our earth clearer and safer.
#49701
A
made
B
to making
C
make
D
to make
推荐题目
----Where is Tom now, Millie?----I saw him _______ in the street a moment ago and I told him _________.
#48934
A
playing; don’t do so
B
playing; not to do so
C
play; to do so
D
play; don’t do so
What difficulty I had _____ the dirty walls! I had no choice but to have it ____ again.
#48673
A
clean, paint
B
cleaning, painting
C
cleaned, to paint
D
cleaning, painted
Dr. Ma used to two or three persons in the hospital.
#49403
A
operate on
B
operating on
C
operate for
D
operating for
--- Excuse me sir, where is Room 301?--- Just a minute. I’ll ask Bob ________ you to your room.
#48511
A
show
B
shows
C
to show
D
showing