(C)
Last summer I learnt to ride a bicycle. At first, I was
1.______ unable to control its direction. Sometimes I
fall to 2.______ the
right or to the left. I worried to ask my father
3.______ impatiently how I could ride straight, so
he didn’t
4.______ answer me directly. Instead, he took me to side of the
5.______ street. "Can you find any bike
track is really straight" 6.______ asked
my father. I watched more carefully and shook my
7.______ head. "No," he said, "in fact, neither of the
tracks is 8.______ always straight.
But just by correct the direction
9.______ every now and then, you had already gone
forward."
10.______