She studied hard. Consequently, she graduated with first class honours.

She studied hard. Therefore, she graduated with first class honours.

She studied hard. As a result, she graduated with first class honours.

As a result of studying hard, she graduated with first class honours.

She studied hard. Hence, she graduated with first class honours.

She studied hard. Thus, she graduated with first class honours.

She studied hard, so she graduated with first class honours.

Since she studied hard, she graduated with first class honours.

Because she studied hard, she graduated with first class honours.