[ Grammar ]
I had washed my hair before they ______ .
A. had arrived
B. arrived
C. been arrived
D. had been arrived

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Interrogative Pronouns & AdverbsPast and Past ContinuousCompound Nouns and Compound Adjectives QuestionsObject Pronoun“Put” Phrasal VerbTake or PutPresent Perfect SimpleEs and SGerund, Infinitive, Bare VerbSo Such Enough TooOther quiz:
Grammar › ViewScientists have found that people who are active at a moderate level experience a long list of health benefits and that physical activity —- vigorous.
A. has to be
B. must be
C. needn’t be
D. had better be
Grammar › View
________ many times every winter in Frankfurt.
A. It snows
B. It snowed
C. It is snowing
D. It is snow
Grammar › ViewWe all ___ to go away this summer.
A. want
B. wants
C. wanted
Gerunds as Objects of Prepositions › View
I’m sick _____ always having to do the dishes.
A. with
B. of
C. about
