高等继续教育 / 英语语法
正确率：100%
网络远程教育期末考试【英语语法】模拟试题
Some aspects of a pilot’s job ＿＿＿＿＿ be boring, and pilots often ＿＿＿＿＿ work at inconvenient hours.
考题选项：
can;have to
may; can
have to; may
ought to; must
Some aspects of a pilot’s job ＿＿＿＿＿ be boring, and pilots often ＿＿＿＿＿ work at inconvenient hours.
考题选项：
can;have to
may; can
have to; may
ought to; must
参考答案：