问题
选择题
Mary hasn't decided whether to take up tennis, basketball, or ___.
A．beginning to play football
B．begin to play football
C．beginning playing football
D．to beginning playing football
答案
答案：B
连词词组whether..or连两个不定式 to take up和begin两者并列。须保持形式一致，D项表达方式错误。