The children were so absorbed _____ their game that they did not notice the passage of time.
A. to
B. about
C. in
D. of
Modern industry abounds _____ opportunities for young people with good scientific qualifications.
A. in
B. for
C. into
D. of
The committee regrets that it cannot accede _____ your request for a month’s unpaid leave.
A. for
B. on
C. in