[ Phrasal Verb ]
She kept ____ it until she finally got the knot untied.
A. away
B. at
C. in
D. back

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Present Perfect Simple & Present Perfect ContinuousPrepositions after Verbs and AdjectiveSimple Present and Present Continuous Tensewill, be going to, would like toInversions and Subjunctivelike/do not likePassive Modals in Different TensesPresent Simple and Continuous TenseMoods of GrammarVerbs with Prepositions and ConjunctionsOther quiz:
Tenses › ViewThey ___ about moving to a new house when they found a perfect one.
A. thought
B. are thinking
C. was thinking
D. were thinking
Comparative and Superlative Adjectives › View
Comparative of “interesting”
A. more interesting than
B. the most interesting
C. interesting
D. interested