It's time something _________(do) about the traffic problem downtown.
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A Filipino maid was executed in Singapore after _____________(convict) of murder.
For managers, every decision has constraints _________(base) on policies, procedures and laws.
What developed was a music readily ___________(take) on various forms and capable of an almost limitless range of expression.
在微程序控制中,计算机执行一条指令的过程就是依次执行一个确定的________的过程。