The word "lean" means ______.
A. stand straight
B. stand at an angle
C. lie down
查看答案
【B5】
A. nothing
B. all.
C. OK
【B3】
A. isn't
B. are
C. aren't
The tower was built ______.
A. to guard the city
B. for the people to see the sea
C. as a church bell tower
The two ends of a tunnel are very wide.
A. Right.
B. Wrong.
C. Doesn't say.