1) The change in the economic environment gives him an _____toward a more ambitious goal, which makes him in ______ need of big investment. (urge)
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Concerns over the online social network’s new privacy policy have led some faithful users to ______ their accounts. Still, the account ________ are claimed to be not numerous enough to affect the sites’ overall size. (delete)
Traffic police in Cambodia have not _________ traffic laws for four months due to the election and have been strongly appealed to resume conducting _____________ for traffic violations. (enforce)
With tons of imitation (仿造的), synthetic (人造的) diamonds pouring into the market, it has become necessary to establish a diamond ____________method by which fake and synthesized diamonds can be clearly _________.(identify)
The doctor couldn’t explain the _____________ of his high temperature. What’s worse, the __________ cough and headache led to his continual insomnia (失眠).(persistent)