27、The companies are working together to create ______ they hope will be the most efficient medicine to cure patients of lung cancer.
A．which B．that C．what D．who
27、C
科目：高中英語 來源： 題型：
The companies are working together to create ______ they hope will be the most efficient medicine to cure patients of lung cancer.
A．which B．that C．what D．who
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