[ Grammar ]
Trees which ___________ about 30 metres tall can be forced to grow into just 30 centimetres tall.
A. is
B. be
C. are
D. was
Select your answer:

Random Topics:
Comparatives - SuperlativesTransitional Phrases and ConjunctionsTenses Practiceduring, for, whileSubject Verb Agreement and Verb TensesGrammar - used toGrammar - to beComplex Sentences with Adverb ClausesIdentifying TensesGRAMMAR - Could / Could notOther quiz:
Present Continuous › ViewWe ___ English.
A. am studying
B. is studying
C. are studying
D. is speaking
Vocabulary and Sentence Structure › View
Working for a multinational company will be very challenging for a fresh graduate like Mary, but she will try her best to fulfill her duties.
A. easy
B. difficult
C. boring
D. interesting
