______ helium rises, a helium balloon floats.

Some believe dinosaurs died out ______ a large meteor hit the earth.

The class was enjoyable although it started a bit late ______ the fun method that the tutor conducted.

The confusion was partly ______ the fact that everything was happening so fast and partly because she had never responded to a man that way before.

______ the electricity went out for most of the day, the ice cream in the freezer melted.

Inflation is considered to be undesirable ______ its adverse effects on income distribution.

Those people avoid working on Fridays ______ it’s a tradition.

Bill Gates could make his billions ______ computers, with the right software, could vastly increase productivity.

Jim and Della will never be together ______ having different opinion about religions.

Spending too much time on social media ______ serious damage to the eye.

The oceans are getting warmer. ______, coral reefs are dying.

Don’t you know that corruption leads to ______

Juvenile delinquency is often caused by ______

This quiz is so hard that ______