Complete the sentence with the correct form of 'to be': ...

★ Verb to Be Tenses & Object Pronoun

Complete the sentence with the correct form of ‘to be’: We _______ visiting his grandparents the day before yesterday.

A. is

B. will be

C. was

D. were

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Fill in the blank with the appropriate form of ‘to be’ in present tense: The flowers _______ beautiful.

A. is

B. was

C. were

D. are