put the words in brackets in Present Perfect. 6.1 my dog yet. I had no time. (NOT/WALK)

Solution:

• 6.1 I have not walked my dog yet. I had no time.

Explanation: Similar to sentence 2, 'yet' suggests the negative Present Perfect. The structure is 'have' + 'not' + past participle. The past participle of 'walk' is 'walked'.