I like getting up very early in summer. The morning air is so good ______（）
A. to be breathed
B. to breathe
C. breathing
D. being breathed
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____ waiting for Jane, he headed home（）
A. To feed up with
B. Feeding up with
C. Fed up with
D. To be fed up with
When____ together, two pieces of dry wood may produce fire（）
A. rubbing
B. to rub
C. to be rubbed
D. rubbed
____, he went to Mr. Green for help（）
A. Not to know what to do
B. To not know what to do
C. Not knowing what to do
D. Knowing not what to do
–Have you got anything ______ there？ –No, I will go there myself. Thank you just the same（）
A. to take
B. should be taken
C. to be taken
D. which should be taken
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