[ Present Tenses ]
My sister __________ her homework now. (to do)
A. has done
B. has been doing
C. is doing
D. does

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Countable - UncountableVerb + PrepositionAdverbs and Adverbial PhrasesModal Verbs & Reflexive PronounsDemonstrative Pronouns and Verb TensesFirst ConditionalComparative Adverba, an, the, zero articleAdjective + to + VerbModal Verbs of Certainty and PossibilityOther quiz:
Homonyms › ViewShe spent the afternoon pulling out the weeds and ___ in her garden.
a. tares
b. tears
Grammar › View
Physics ________ a very difficult subject for many students.
A. Is
B. Are
All workers must be equipped with safety devices such as helmets ____ entering the construction site.
A. about
B. during
C. from
D. before
Prepositions › View
… the kitchen
A. in
B. on
C. at
