[ Grammar ]
Factories can always ________ masks if they need to.
A. mass production
B. mass producing
C. mass produced
D. mass produce
E. mass produces

Random Topics:
Verb 3 formsPrepositions and TensesWorld Literature VocabularyCorrelative ConjunctionGrammar of Conjunctions and PrepotitionsPast Perfect Simple & ContinuousIELTS VocabularyProgressive TenseTenses and FoodConditionalOther quiz:
Subjunctive › ViewNajma : Marta, You look tired. Why don’t you sleep?
Hukom : I wish I ……. You know I still have to do my homework now.
A. Can
B. Will
C. Will be able to
D. Had been able to
E. Could
Grammar › View
Where is Mr Minh? – He ……………… the telephone in the room.
A. answer
B. answers
C. has answered
D. is answering
Past Tenses › ViewWhen we ___________ (arrive) at the party, everyone ___________ (sing).
A. arrived, was singing
B. arrived, sang
C. arrives, sings
D. arrive, was singing
Present Perfect Tense › View
They _______10 cars so far.
A. have have
B. have had
