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:
Vocabulary › ViewAspirin is the one of the painkillers, which can _______ your headache.
A. relieve
B. resist
C. remind
D. review
Modal Verbs › View
Each generation is likely to have different thoughts about how the family___ interact.
A. should
B. must
C. have to
D. could
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
