[单项选择]John is ten years old. He is old enough ______ himself.
A. to dress
B. to wear
C. to put on

[单项选择]Timothy was ten years old. He was not a very good pupil, and he (41) having to do homework, (42) he enjoyed doing other things in his free time. He (43) did his homework, and when he did it, he always made (44) mistakes. Then one day, his maths teacher looked at Timothy’s homework and saw that he had got all his answers (45) . He was pleased and rather (相当，宁愿) (46) . He called Timothy to his desk and said to him,’ You got (47) your homework right this time, Timothy. What happened Did your father (48) you" Usually Timothy’ s father helped him (49) his homework, but the evening before this, he had not been able to, because he had not been at home, So Timothy answered, "No, sir. He was busy last night, so I had to do it all by (50) ./
A. that B. but C. because