It’s compulsory for you to contact the customer and give her an explanation.
A. You needn’t contact the customer and give her an explanation.
B. You must contact the customer and give her an explanation.
C. You may contact the customer and give her an explanation.
D. You shouldn’t contact the customer and give her an explanation.

Random Topics:
Grammar ModalsLinkers and ConjunctionsPast form of ModalsArticlesRelative Clauses with who and whichModal Verbs for Permission and ObligationRegular and Irregular VerbsRelative Clauses & Real ConditionalsPresent TenseModals of ProhibitionOther quiz:
Past and Present Tenses › ViewFill in the blank with past perfect: “By the time we arrived, the show ___ (start).”
A. has started
B. had started
Grammar › View
The thing doing the action is the subject of the sentence and the thing receiving the action is the object
A. Active Voice
B. Passive Voice
Dấu hiệu nhận biết thì Hiện tại hoàn thành
A. now
B. last year
C. up to now
D. soon
Question Tag › View
He saw the accident yesterday, ………. ?
A. is he
B. won’t he
C. didn’t he
D. doesn’t he
