During winter, my energy bill significantly increases.

I think the congee my mother makes when I catch a cold is the most delicious.

He refused my proposal.

The leaf of this tea plant is vividly green, isn't it?

He forgot to shave his beard.

He is good at fastening his tie.

He fell in love with her.

He answered wrong in the test.

I eat breakfast every day.

A quark is a type of elementary particle.