[ Modals in the Past - Speculation and Deduction ]
The government _________ implemented a more efficient process for naturalization to reduce delays. However, they weren’t aware of the increasing in immigration.
A. could have
B. must have

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Es and SPresent Perfect and Present Perfect Progressive TensesPast ModalsPresent Perfect SimpleSpellingGrammar - Present PerfectComparatives and Past Perfect TenseFuture Tenses, Conditionals and ProfessionsAcademic VocabularySimilesOther quiz:
Some vs. Any › ViewCan I ______________more coffee ?
a. some
b. any
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Ali is so_____________. He always wants to win every game he plays. He can’t stand losing.
A. typical
B. regular
C. competitive
D. creative
Grammar › ViewHer picture is now _____ on my desk.
A. sitting
B. setting
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“Has anyone ever ____ an albino tiger before?” Miss Chua asked her students?
A. see
B. saw
C. seen
D. sees
