[ Grammar ]
_____ the demands of aerospace, medicine, and agriculture, aengineers, are creating exotic new metallic substances.
A. Meet
B. Being met are
C. To meet
D. They are meeting

Random Topics:
Inversion + Passive VoiceNoun PhrasesClauses of ReasonConjunctive AdverbPrepositions and TensesGrammar - used toPreposition of PlaceSimple Past/Past ProgressiveIF CLAUSEConditionals III - Mixed 1st, 2nd & 3rd ConditionalsOther quiz:
Conjunctions › ViewChoose the correct conjunction to complete the sentence: ‘The engine room was flooded, _____ the engineers managed to repair the damage.’
A. and
B. so
C. because
D. but
Grammar › View
I don’t like watching film, _________ I never go to the cinema.
A. and
B. or
C. but
D. so
Grammar › ViewShe puts the fruits __________ the basket.
A. in
B. under
C. on
D. into
The Simple Present Tense › View
They always ________________ in class.
A. talking
B. talk
C. talks
D. talked