问题
________ do you surf the Internet?—Once a week, at least.[ ]
A: How
B: When
C: How often
D: How many times
B: When
C: How often
D: How many times
正确答案是：
同类题型
_____ has your brother studied in New York? —For two years. [ ]
There are ______ people in the room, so it’s very crowded (拥挤的) .
They aren’t our books. Are they___________?
Which is more important, English or math?—I think English is as _______ as math.
There are many pears ______ the tree, but there aren’t any birds ______ it. [ ]