---Have you heard of Earth Day? --- Yes, We have only one Earth. We have no choice but ________ it.
#49067
A
protect
B
protected
C
protecting
D
to protect
推荐题目
-- Shirley, what were you doing at three o’clock yesterday? -- I was sitting by the window, __________ to the music.
#50092
A
listen
B
listening
C
listened
D
to listen
You should move back and forth while _______ basketball.
#50269
A
to play
B
playing
C
are playing
D
plays
When you read English, translate every word into Chinese.
#50175
A
try not to
B
try to
C
don’t try
D
not try