单项选择题
You () yesterday if you were really serious about the job.
A. ought to come B. ought to be coming C. ought to have come D. ought have come
单项选择题 It is said that the math teacher seems () towards bright students.
单项选择题 Mother told the child () too late.
单项选择题 Americans eat () vegetables per person today as they did in 1910.
