You ... take part in the competition (a) mightn't (b) us to (c) would (d) must
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Answer:
must
Explanation:
The men wear oxygen helmets so that they do not introduce modern germs into the ancient air. When the men visit the past with Time Safari, Inc., they have to be very careful not to affect the environment in any way.
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Answer:
Modals (also called modal verbs, modal auxiliary verbs, modal auxiliaries) are special verbs that behave irregularly in English. They are different from normal verbs like “work, play, visit…” They give additional information about the function of the main verb that follows it. They have a great variety of communicative functions.
Looking for an easy way to learn English Grammar? then you are in right place. Here we providing basic English Grammar topics like Tenses Verbs, Nouns, etc…
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