His room needs _______, so he must have it _______.
A. painting;painted
B. painted;painting
C. painting;painting
D. painted;painted
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The young trees we planted last week require _______ with great care.
A. looking after
B. to look after
C. to be looked after
D. taken good care of
Only _______ English doesn't mean _______ the language.
A. to learn;to learn
B. learning;learning
C. learning about;learn
D. learning about;learning
She returned home only to find the door open and something _______.
A. missed
B. to be missing
C. missing
D. to be missed
She decided to devote herself _______ the problem of old age.
A. to study
B. studying
C. to studying
D. study