完成句子
In my opinion, life in the twenty first century is much easier than _________(原来)．(used)
It is required that the students not use mobile phones in their school, so seldom _________(你会看到)them using one．(see)
It is the first time that an African－American _________(选为)the president of the United States．(elect)
Fully _________(忙于)in looking after three children at home, she no longer has time to enjoy the various activities in the club．(occupy)
The deed _________(她两次捐款)to the Hope Project inspires all the people in her neighbourhood．(donate)
The mother rather than the twins _________(在动手术)by Doctor Thomas now．(operate)
It is widely acknowledged that never _________(中国参加)in any nuclear arms race and never deployed nuclear weapons abroad．(participate)
We _________(本来可以完成任务)on time, but the traffic delay destroyed all our plan．(complete)
Mary as well as her classmates _________(一直在做准备)for an important examination recently．(prepare)
You can’t see through the telescope _________(直到调整好)to your eyes．(adjust)