Question

The children are jumping excitedly because they have _______ the design perfectly in groups.

A.completed B.controlled C.contacted D.caused

Answer

A

【解析】

句意：孩子们兴奋地跳着，因为他们完美地完成了小组设计。

考查动词辨析。completed完成；controlled控制；contacted接触；caused引起。根据The children are jumping excitedly孩子们兴奋地跳着，结合because they have ____ the design perfectly in groups.及备选词汇，可知应该是他们完美地完成了小组设计，所以completed符合题意，其它选项均语意不通,故选A。