1. Owing to
Owing to the help from his mother， he has made rapid progress.
2. Thanks to
Thanks to the angle at which TOM stood， he could just see the sunset.
3. As a result of
Millions of people are threatened with starvation as a result of drought and poor harvests.
4. Due to
The little girl began to cry due to the thunder.
5. In virtue of
He was highly praised in virtue of his brave deeds.
6. In that
I‘m lucky in that I’ve got three sisters.
7. On account of
He was very scared on account of darkness.
I‘m forever on a diet， since I put on weight easily.
Owe A to B = ascribe A to B = attribute A to B = due to = on account of