The United States has launched many astronauts into space since ...

[ Grammar ]

The United States has launched many astronauts into space since 1969

A. Simple Present Tense

B. Present Progressive

C. Simple Past

D. Present Perfect

Select your answer:
A B C D E

Random Topics:

Sentence Adverbs & Third Conditional Present Perfect Continuous Determiners & Quantifiers Employment Vocabulary Constrative Conjunction Used to Preposition Subordinating and Coordinating Conjunctions Conditionals Type I Past Tense (Regular and Irregular)

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