Here are the corrections for each sentence:

1. **have** → **has**
*As a single mom, she **has** to be both the homemaker and the breadwinner.*

2. **makes** → **has to do**
*My younger brother is unhappy that he **has to do** the washing-up by himself.*

3. **prepare** → **will prepare**
*My mom is busy today, so I **will prepare** the meal for the whole family.*

4. **go** → **am going**
*My father drives me to school every morning, but this week I **am going** by bus.*

5. **the elderly is** → **the elderly are**
*Typically, **the elderly are** sent to a nursing home if they cannot take care of themselves.*