问题
选择题
Timmy is worrying about enough time the work.
A．not to have; doing
B．not having; doing
C．not to have; to do
D．not having; to do
答案
答案：D
worry about 表示担心。后接动词的ing形式，而have ···sth to do，为动词不定式作为后置定语，想答案为D
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