题干
Tom won't go to the zoo unless he __________ his homework.
A：finish
B：finishes
C：will finish
D：Finishing
答案(点此获取答案解析）
B
Tom won't go to the zoo unless he __________ his homework.
A：finish
B：finishes
C：will finish
D：Finishing
、△△、=”构思出了独特而有意义的图形并根据图形还用简洁的语言进行了表述： 