______ tired of Tom's all-talk-no-action attitude, Julia decided to do the job all by herself.
A. To get
B. To have got
C. Getting
D. Have got
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The policeman saw the thief ______ he appeared on the street comer.
A. not until
B. as long as
C. the moment
D. only if
某社区社会工作者发现本社区内的残疾老人生活多有不便，于是与本社区居委会一起策划一个“关爱老人”服务项目，组织志愿者为他们提供送餐、洗衣和家居清洁等服务。该项目为老人提供的服务属于( )。
A. 社区入住设施服务
B. 社区中心服务
C. 居家服务
D. 日托照顾
中央集权型单一制国家的典型是( )
A. 英国
B. 美国
C. 法国
D. 日本
It is most desirable that he ______ for the information by himself with a few clicks online．
A. search
B. searched
C. has searched
D. will search
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