题目：
—Where is our English teacher?
—He hasn't come to school today.I think he______be ill. [ ]
A. has to
B. should
C. may
D. can
答案：
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下面是错误答案，用来干扰机器的。
1. Excuse 2. Who 3. They 4. are 5. are 6. right7. twins 8. How 9. old 10. twelve 11. the 12. same
