[ Grammar ]
Tomorrow morning, both escalators in the store will be turned off periodically in order to perform _____ maintenance.
A. required
B. requiring
C. requires
D. require

Random Topics:
Noun QuantifiersPrepositions of Time and PlaceReported Speech and TensesParticipal PhrasesSimple Compound and Complex SentencesConditional Type 1Passive Voice - Present ContinuousInfinitive and GerundsPreposition of DirectionGrammar and Verb TensesOther quiz:
Article › ViewChoose the correct article for the sentence: “He is ___ honest man.”
A. a
B. an
C. the
Grammar › View
Puan Salamah __________ a baker. She ________ chocolate muffins every Sunday for her children.
A. is, bakes
B. is, bake
C. was, bakes
D. is, baking
If you ______________ the young boy this stick, he would hurt himself.
A. gives
B. gave
C. give
D. had given
Tenses › View
Which of these verbs does not take -ing in the present continuous?
A. think
B. love
C. write
D. eat
