[ Expressing Obligation and Modals ]
The example of expressing obligation is…
A. They have to wear uniform at school
B. You should wear uniform at school
C. You aren’t allowed to wear uniform at school
D. We must not wear uniform at school

Random Topics:
Stative Verbs and TensesIn/On/At + TimeQuantifiers and AdjectivesPerfect TensesFormal & Informal WordsAdverb of TimeCity PlacesAdverbs, Modals, Preposition of timeModal RequestsGrammar - Reflexive PronounsOther quiz:
Conjunctions and Verb Tenses › ViewChoose the sentence with correct punctuation.
A. “Can you help me” she asked.
B. “Can you help me,” she asked.
C. “Can you help me.” she asked.
D. “Can you help me,” she asked?
Grammar › View
In chemical terms radium ______ little from barium.
A. is different
B. differs
C. differed
D. is differing
Simple Past Tense › ViewI write a letter to Jane every month. Last month, i … a letter.
A. Have written
B. Is writing
C. Wrote
D. Write
Prepositions › View
He suffers ___ chronic back pain.
A. in
B. to
C. from
D. with
E. on
