单项选择题
It is normal for a teacher to get angry with the student who repeats the same mistake.()
A. useless B. rare C. senseless D. usual
单项选择题 14 In the latter case the outcome can be serious indeed.()
单项选择题 Scott seized the opportunity to present his proposal to the director.()
单项选择题 You should have blended the butter with the sugar thoroughly()
