[ Grammar & Vocabulary ]
If you travel on one of these, an astronaut you must be. As it takes you to outer space, where there is zero gravity.
A. hot air balloon
B. space shuttle
C. submarine
D. helicopter

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World Literature VocabularyPresent, Past, and Future TimeParallel Structure or Combining SentencesPast Simple (to be)Adjectives vs AdverbsPresent tense AffirmativeAdjective vs AdverbAdverb ClauseRegular and Irregular AdverbTenses and ArticlesOther quiz:
Mixed General Quiz › ViewYou must ___ in a wild horse.
a. rain
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Question Words › View
………are playing with the dog?
Samy and Tom are playing with thebdog.
A. Who
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Grammar › ViewHow ……. keyboards are there?
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What ending do we add to words in the Present Continuous Tense?
A. – ing
B. – ed
C. – s (-es)