[ Grammar ]
I was surprised by __________ understand the difficult concepts.
A. be able to
B. being able to
C. to be able to
D. been able to
Select your answer:

Random Topics:
Much, many, a lot of, a few, a littleVocabulary, Adjective & PrepositionShould and Shouldn'tGrammar and PunctuationSimple Verb TensesSubjunctiveThird Grade ExamNounsCoordinating Conjunctions and Comparative AdjectivesThe Structural Types of SentencesOther quiz:
Verb Tenses › ViewI ___ the amount of flour that I added to the recipe.
A. double
B. doubleed
C. doubled
Grammar › View
What word goes in the blank?
My mom has to put ______ water in the plants every week or they will die.
A. the
B. a
C. an
D. x (nothing)
