Teachers can tell their students to use mobile apps like “PIAZZA” to access course materials and also to post questions about specific subjects, all ____ can be done in the classroom or outside the classroom.
A. this
B. what
C. which
D. how

Random Topics:
BASIC GRAMMAR - PRONOUNSAdjectives & PrepositionConjunctions and PronounsConjunctions in Complex SentencesSimple Past vs Past Continuous TenseSingular and Plural NounsConditional and SubjunctiveMay, MightPast Simple & Past PerfectMesopotamia VocabularyOther quiz:
Past Tenses › ViewWhile they ___________ (chat) in the garden, I ___________ (read) my book inside.
A. were chatting, read
B. chatted, was reading
C. were chatting, was reading
D. chatted, read
Grammar › View
Last week, my aunt ____ us to the new restaurant.
A. take
B. takes
C. taking
D. took
Grammar › ViewCompanies routinely give a two-weeks vacation to employees who have completed their first year of service. Which one is incorrect word/phrase?
A. give
B. two-weeks
C. have
D. their
Grammar › View
Someone who has a lot of energy and is very active.
A. bossy
B. graceful
C. energetic
