1. Read the sentences and choose the correct answer. 1) She screamed a lot but nobody _________ heard her voice.

The correct answer is **c) couldn't**. Translation: *Она много кричала, но никто не услышал её голос.* Explanation: *'Couldn't'* is the correct answer because it refers to the past. 'Could' is the past form of 'can', and in this case, it indicates that no one was able to hear her voice.