[ Grammar ]
In fact, placing the rudder in the ship’s center and building the stern into a higher deck were Chinese inventions.
A. Change were to was.
B. correct as is

Random Topics:
Possessive PronounsSimple and Past TensesPhrase and ClauseModals and Past ModalsZero & First ContidionalVerb + InfinitiveComplex SentencesVerbal PhrasesConditional TensesGrammar (Adjectives)Other quiz:
Tenses › ViewMy dad … a lot of tennis some years ago.
A. plays
B. played
C. is playing
D. was playing
Gerunds and Infinitives › View
I would like to say a big thank you to everyone who’s helped make our wedding such a special occasion.
B. who’s
C. make
D. such
Grammar › ViewDo you have ______ apple?
A. an
B. a
C. any
Vocabulary › View
logical, sensible
A. reciprocal
B. rational
C. opus
D. inert
