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I am not sure …………………. she did it.
Question 1:
I am not sure …………………. she did it.
A.
how
Feedback
After some common verbs like tell, ask or sure, prepositions can be dropped before question words.
B.
of how
C.
of
These questions are from this test. Would you like to take a practice test?
Prepositions Or Conjunctions Exercise - Test 2 | Exercise follow Topic
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12 questions
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I am not sure …………………. she did it.
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