问题

Leon has been studying at Hilltop School_____two years.[ ]
A: since
B: for
C: in
D:after
B: for
C: in
D:after
正确答案是:
同类题型
I am_____ building a new factory here. It will pollute the water here. [ ]
How dangerous! She was driving the car with one hand and holding an ice cream with ____.
If our government ______ attention to controlling food safety now, our health ______ in danger.