[ Grammar ]
3-D printing ____ complex tools and components.
A. is used for produce
B. is used to produce
C. uses for producing
D. uses to produce

Random Topics:
Demonstrative PronounDefinite ArticlesFuture Tense and ConditionalsWish / If only ( Present)Prepositions and Preposition PhrasesCommon & Proper NounsPresent simple or Past simplePronoun Antecedent AgreementEd and Ing EndingsGrammar & ReadingOther quiz:
Gerund or Infinitives › ViewAfter working as a chef, Maria went on _______ her own restaurant.
A. to buy
B. buying
Simple Future Tense › View
You _________ many friends in new school.
A. will meet
B. shall meet
C. will met
D. will meets
Phrasal Verbs › ViewMike hasn’t turned up yet. Do any of you know where is he?
A. Turn Up
B. Give Up
C. Turn Out
Past Tenses › View
to give a series of actions in the order that they happened
A. past simple
B. past continuous
