[ Grammar ]
They ______ (travel) in the USA ______ one month.
A. They have traveled in the USA for one month.
B. They have traveled in the USA since one month.
C. They has travel in the USA for one month.
D. They has travel in the USA since one month.

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Past Continues TenseInfinitive and GerundZero & First ConditionalAdverbs of Time and PlacePaired ConjunctionIndefinite PronounsGrammar - Countable/ UncountablePresent Simple or Present ContinuousPresent Simple & ContinuesGrammar for IELTSOther quiz:
Grammar › ViewChoose the sentence with the correct subject-verb agreement.
A. They is going to the store.
B. They are going to the store.
C. They going to the store.
D. They goes to the store.
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She will be busy working that evening so she ____ come to the party.
A. can’t
B. hasn’t
C. don’t
D. has
Conditional Clause › ViewShould he telephone, _____ me a message.
A. left
B. leave
C. have left
D. have been left
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I am happy as a clam, ……………….. ?
A. amn’t
B. am I
C. aren’t I
D. are I