How would I revise this sentence to eliminate unnecessary shifts in tense, mood, voice, or person?

The freezing weather is threatening crops such as citrus fruits which were sensitive to cold.

The freezing weather threatened the crops, which were sensitive to cold.

That's good. Your correction fixes the shift in tense so it's all in the past tense now.

Thank you for over looking my work and giving me confidence. English is not an easy subject for me.

the freezing weather os threatening crops such as citrus fruits, which were sensitve to cold

To revise the sentence and eliminate unnecessary shifts in tense, mood, voice, or person, you can make the following adjustments:

" The freezing weather is threatening crops such as citrus fruits which were sensitive to cold."

The freezing weather threatens the crops, which are sensitive to the cold.

By changing "is threatening" to "threatens," you maintain consistency in the present tense throughout the sentence. Additionally, adjusting "which were sensitive to cold" to "which are sensitive to the cold" ensures that the sentence maintains a consistent voice and insight.