If we _________ now to protect the environment, we’ll live to regret it.
#100580
A
hadn’t acted
B
haven’t acted
C
don’t act
D
won’t act
推荐题目
After he had broken the world record, Rod ____ to a restaurant to celebrate with hid friends.
#103773
A
went
B
had gone
C
would go
D
has gone
---Ring me at six tomorrow morning, will you ?---Why that early ? I _____then.
#101802
A
have slept
B
have been sleeping
C
will sleep
D
will be sleeping
—Bob! How is your project? I heard you started it last Friday, right?—Oh! I_______ for it. But I haven’t decided when to do it.
#102357
A
have prepared
B
had prepared
C
have been preparing
D
was preparing
--- You have made a promise to go with me to Nanjing. So why aren’t you getting ready?--- But I ________ that you wanted me to start at once.
#100573
A
haven’t realized
B
hadn’t realized
C
didn’t realize
D
don’t realize
Ladies and gentlemen, please fasten your seat belts .The plane _____ .
#101606
A
takes off
B
is taking off
C
has taken off
D
took off