题目列表(包括答案和解析)
—Look at these tracks. It __________ be a wolf.
—It needn't be. It ___________ be a fox.
A. must; could B. may; might
C. need; must D. could; need
—Look at these tracks. It __________ be a wolf.
—It needn't be. It be a fox.
A. must ; could B. may ; might
C. need ; must D. could ; need
—Look at these tracks. It __________ be a wolf.
—It needn't be. It _______be a fox.
A. must ; could B. may ; might
C. need ; must D. could ; need
—Look at these tracks. It __________ be a wolf.
—It needn't be. It ________ be a fox.
A. must ; could B. may ; might
C. need ; must D. could ; need
—Look at these tracks. It __________ be a wolf.
—It needn't be. It be a fox.
A. must ; could B. may ; might
C. need ; must D. could ; need
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