Complete the sentences with the correct form of the modals and verbs in parentheses:
We ___________ (must / maintain) excellence in our customer service or people will complain.
A. mustn’t maintain
B. must maintain
C. must maintains

Random Topics:
Past form of ModalsComparative AdjectivesPrepositions Of PlaceGive, do and makeConditional Sentence Type 3Simple Present Negative and QuestionReported Speech and SubjunctiveIf/Unless - Conditional type 1Basic GrammarPresent Simple TenseOther quiz:
Tenses › ViewBy the time Mr.Arifin retires, his youngest child have graduated from university.
This means that Mr Arifin ……when his youngest son graduated
A. will still work
B. will retire
C. doesn’t want to retire
D. wants to work
E. doesn’t want to work
Grammar (Adverbs, Prepositions, Prepositional Phrases) › View
The cheetah runs ________________ of all the animals.
A. the most gracefully
B. more gracefully
C. gracefuler
D. gracefulest
Tenses and Voice › ViewDifferentiate between the present perfect and past perfect tenses.
A. Present perfect describes actions that will happen; past perfect describes actions that are currently happening.
B. Present perfect is used for future actions; past perfect is used for ongoing actions.
C. Present perfect indicates relevance to the present; past perfect indicates an action completed before another past action.
D. Present perfect indicates an action completed in the future; past perfect indicates an action that is still ongoing.
Vocabulary and Grammar › View
. If we _____ protesting about air pollution, something might be done.
A. throw into
B. keep away
C. throw away
D. keep on
