[ Grammar ]
Its economy centers ________ the production of rice.
A. at
B. to
C. on
D. with

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Present and Past Simple PassiveFuture FormsPassive SentencePronoun & Present SimpleConditional Sentence Type 3-ed and -ing AdjectivesModals for Ability, Possibility and PermissionTOEFL GrammarFirst Conditional SentenceGrammar - must & have toOther quiz:
Grammar › ViewI really like my new home, especially _______ location.
A. its
B. it
C. my
D. our
Grammar › View
Hanane and Adil are looking out the window. It … again. It … all the time here in the winter.
A. ‘s raining, ‘s raining
B. rains, rains
C. rains, ‘s raining
D. ‘s raining, rains
Mixed General Quiz › ViewGalveston and Corpus Christi ___ Texas cities along the Gulf coast.
a. am
b. is
c. are
Subject Verb Agreement - Indefinite Pronouns › View
Somebody ……………. waiting for you downstairs.
A. are
B. is
