[ 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:
Grammar › ViewIdentify the case of the pronoun used in the sentence.
The guard told us that the store is closing in 30 minutes.
A. nominative
B. objective
C. possessive
D. base
Sentences Function and Structure › View
Rewrite the sentence:
Unless you know the answer, do not raise your hand.
A. Do not raise your hand, unless you know the answer.
B. Do not raise your hand unless you know the answer.
Do you have ______ apple?
A. an
B. a
C. any
Vocabulary › View
logical, sensible
A. reciprocal
B. rational
C. opus
D. inert
