完型填空。阅读短文，掌握大意，从所给的A、B、C三个选项中选出一个最佳选项。
A door was locked. A big stone came and hit the door. But he couldn’t 1 it. Later a key came. He 2 the lock and the door opened. The stone was very 3 that the key could open it so easily. He asked the key,“ 4 did you do that?” The key 5 him and said, “Because I understand its 6 .”
Life is just like this. 7 we want to solve a problem, we must understand it 8 . If we want to make friends with people, we must understand 9 . If we want our parents to 10 us, we must first know their hearts, We must know what they hope for.
( ) 1. A. touch B. open C. reach
( ) 2. A. got out B. got to C. got in
( ) 3. A. worried B. thankful C. surprised
( ) 4. A. Why B. How C. When
( ) 5. A. smiled to B. talked to C. agreed with
( ) 6. A. problem B. work C. heart
( ) 7. A. If B. Because C. Although
( ) 8. A. first B. later C. finally
( ) 9. A. us B. others C. them
( )10. A. love B. understand C. remember