[ Grammar ]
Fill the blank with suitable preposition
I am sorry ….. what I have done
A. at
B. on
C. for

Random Topics:
Relative - ConditionalPresent Simple Positive and NegativeGrammar of Conjunctions and PrepotitionsVocabularyConditionals (0 - 1 - 2)Infinitive and GerundsTenses and StructureIf- ConditionalConjunctions & InterjectionsExclamationOther quiz:
Grammar › ViewI think I saw John drop his pen. I think it is _____.
A. mine
B. his
C. hers
Grammar › View
When was the last time you took a picture?
a. A picture of Jane.
b. Seven pictures.
c. About four days ago.
d. With my camera.
__________ she like playing tennis?
A. Do
B. Does
Grammar › View
They …………………………. gentle.
A. always are
B. always is
C. are always
D. is always
