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:
Subject-Verb Agreement › ViewThe upper extremities ___ difficulty with full flexion.
A. Has
B. Had
C. Was
D. Have
Grammar › View
When he was in middle school, Chris knew what kind of career he wanted. _____ plan was to study to become a civil engineer.
A. he
B. his
C. their
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