Question

Children..... playing in the garden yesterday (be) English grammar

Answer 1

children were playing in the garden yesterday

Answer 2

Children were playing in the garden yesterday.

• The given sentence is in the past tense( as evident from the word 'yesterday') so the verb needs to be in the past form.
• The base form of the given verb in the bracket is 'be', simple past form is 'was or were' and the past participle form is 'been'.
• The verb 'were playing' is in the past continuous tense. It describes an action that takes place in continuation in the past.
• The word 'quick' has a similar meaning and can be changed into the adverb form by addition of 'ly',i.e. quickly.