【题目】There will be a bow and arrow competition ______ to retell ______ the Plains Indians used to hunt for food.
A. designed; what B. designing; how C. designing; what D. designed; how
在线课程【答案】B
【解析】试题分析：句意：众所周知，家长们都很关心孩子的学业，因为学业的好坏与孩子们的未来息息相关。固定短语“担心；关心”是be concerned about，“与之相关”是 be concerned with，故选D。