Some of these flowers ______ by my Mum.have plantedwere plantedhave been plantedhas been planted

To choose the correct option for the sentence "Some of these flowers ______ by my Mum," we need to understand the context and the appropriate tense.

1. Understanding the Context

• The sentence talks about flowers that have been planted by your Mum, suggesting that the action is completed but relevant to the present.

2. Analyzing the Options

• have planted: This form is incorrect as it does not match the passive structure required in the sentence.
• were planted: This is past tense but does not convey the relevance to the present.
• have been planted: This is the present perfect passive voice, indicating that the action was completed at some indefinite time in the past and is relevant now.
• has been planted: This implies a singular subject, which does not fit with "flowers."

3. Conclusion

Based on the analysis, the most fitting option is "have been planted."

Final Answer

Some of these flowers have been planted by my Mum.