The Sanlu Milk Powder event is a clear indication that food safety is a big problem; nobody can ___ all foods are secure to us, but we are sure that the situation is turning for the better．
| A．acknowledge | B．guarantee | C．identity | D．clarify |
In our school, the students have three__________ courses and seven __________courses.
| A．required ;alternative | B．require ;alternative |
| C．requiring ; alternative | D．reqiure;alternative |
Being able to speak another language fluently could be a great ___when you are looking for a job.
| A．advantage | B．chance | C．help | D．importance |
It doesn’t often snow in my hometown in winter, but it ___be rather cold sometimes.
| A．shall | B．should | C．can | D．would |
His first baby was born soon after he got married, which seemed to have ___his sense of responsibility.
| A．brought down | B．brought out | C．turned down | D．turned out |
–You’ve got a stomachache? But we ate at the same place. How come my stomach is fine?
--You have an iron stomach! Mine isn’t ___ strong.
| A．as | B．such | C．much | D．enough |