单项选择题
单项选择题 (In) his (latest) article Tom criticizes the way (which) the war (is being handled).
单项选择题 The unit of (measurement) known as foot (has) originally based on the average (size) of the human (foot).
单项选择题 (If) the experiment succeeds or fails, it will (provide us with) (valuable) experience, which is essential to (improving) our future work.