[ 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:
Present Tenses › ViewThey have razed house to the ground.
A. Present Simple
B. Present Continuous
C. Present Perfect Continuous
D. Present Perfect
Present Continuous › View
Question: ………………………………
Answer: “It’s sleeping.”
_
A. What are you doing?
B. What’s he doing?
C. What’s your mum doing?
D. What’s the dog doing?
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