The substrate is placed in the container.

She complained of abdominal pain.

She conducted a preliminary study before starting her research.

I received an injection at the doctor's office.

The entrant was excited to participate in the competition.

The city streets are laid out in a grid pattern.

The fungus grows on decaying leaves.

The neuron is the basic unit of the nervous system.

He tried to simulate the sound of a car engine.

She decided to pursue a postgraduate degree after graduating from college.