單項(xiàng)選擇題

The most importnt thing ______we should thinkbout is ______ we should do next.wht; tht B．t

htThe most importnt thing ______we should thinkbout is ______ we should do next.wht; tht B．tht;tht C．tht;wht D．which;whtA．what; thatB．that;thatC．that;whatD．which;what
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