[ Grammar ]
However, no one in Europe then was using multiple masts on their ship.
A. Change was to were.
B. Change their to his or her.
C. correct as is

Random Topics:
Present PerfectImperative SentencesModals of DeductionThird ConditionalsAdjectives and ArticlesOpinion / AgreementVerb FormGrammar: wishes and regretsSentence Adverbs & Third ConditionalIndependent and Dependent ClausesOther quiz:
Present Continuous › View(A) Are you studying English now?
(B) Yes, I ….
A. do
B. am
C. are
D. did
Grammar › View
Zero Conditional. Complete:
If you study,
_
A. you pass the exam
B. I will be happy
Expressing Obligation and Modals › ViewWe use must/mustn’t to express:
A. obligation or duty, very strong advice, prohibition
B. prohibition
C. necessity
D. lack of necessity
Tenses › View
Convert to past tense: They will finish the project tomorrow.
A. They finished the project yesterday.
B. They finished the project today.
C. They will have finished the project tomorrow.
D. They are finishing the project tomorrow.
