Auxiliary verbs

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Across
  1. 2. the word is known as present continuous tense auxiliary verb.
  2. 4. verbs are known as helping verbs.
  3. 6. verbs is an another type of auxiliary verbs.
Down
  1. 1. auxiliary verb is an type of auxiliary verb.
  2. 3. the auxiliary verb is used for asking questions except what who which etc.
  3. 5. is used for perfect tense auxiliary verb.