问题
选择题
.My little son could do nothing but ___outside all day long.
A．play
B．to play
C．to playing
D．to be playing
答案
答案：A
句子谓语动词是do或句中用to do作定语时，but/except后的不定式一般不用to.
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.My little son could do nothing but ___outside all day long.
A．play
B．to play
C．to playing
D．to be playing
答案：A
句子谓语动词是do或句中用to do作定语时，but/except后的不定式一般不用to.