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She has a special aptitude ...... drawing.
She has a special aptitude for drawing.
Oops!
Okay!
I put my money under the bed ..... safe keeping.
I put my money under the bed for safe keeping.
Oops!
Okay!
You should always take great pride ...... your work.
You should always take great pride in your work.
Oops!
Okay!
I like my students to feel ..... ease in the classroom.
I like my students to feel at ease in the classroom.
Oops!
Okay!
I had no difficulty ........ find/finding your house.
I had no difficulty (in) finding your house.
Oops!
Okay!
Have the opportunity .................... do/doing s.t.
Have the opportunity TO DO s.t.
Oops!
Okay!
They bought the antique ...... auction.
They bought the antique at/by auction.
Oops!
Okay!
Who's to blame ........... making this mess?
Who's to blame for making this mess?
Oops!
Okay!
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