问题补充:
单选题Don’tbotherTom,heis______withtheexperimentonwatermoleculesinthelab.A.focusedB.fixedC.occupiedD.concentrated
答案:
C解析试题分析:查固定词组。Be occupied with…忙于…句意:不要去麻烦Tom。,他正忙于在实验室里做实验。根据句意说明C正确。考点:考查固定词组点评:be occupied with…忙于….该词组与be busy doing sth忙于做sth