[ Grammar ]
By end of this year, Staff Sergeant Liu ____________ in the K9 training unit for thirty years.
A. serves
B. is serving
C. has served
D. will have served

Random Topics:
Grammar - FragmentsA(n), the, no articleRelative Clauses beginning with PrepositionsVerbal and Appositive PhrasesGrammar - help/have/let/makeDirect and Indirect QuestionContrast Linking WordsClausesArticles - rulesCorrelative Conjunction & Complex SentencesOther quiz:
Homonyms › ViewThe judge ordered that he be held without ___ in the prison.
a. bail
b. bale
Tenses › View
Choose the correct form of the verb from parentheses. When I heard the knock on the door, I (opened / was opening) it.
A. opened
B. was opening
Prepositions › ViewIf you’ve got a problem, then do something ______ it!
A. with
B. for
C. about
Grammar › View
My mirror … broken. I need a new one.
A. is
B. are
