The American boy is only four years old. He can swim            the lake.
#39578
A
over
B
along
C
across
D
past
推荐题目
 --_________ do you do some outdoor activities?--Once a week.
#39135
A
How long
B
How much
C
How far
D
How often
The dog is very ___, and it can work out the problem____.
#40730
A
smart; easy
B
smart; easily
C
smartly; easily
D
smartly; easily