English example sentences with "act up"

You had better act upon his advice.

Cause and effect react upon each other.

I haven't known the fact up to now.

I only wish I had the courage to act upon my impulses.

Tom's manager ensured him that his duty to his country was to be kept secret, but that it had no impact upon the security of the nation.

Please don't act up this time. Just let the doctor examine you in peace.

When you see something, your visual system absorbs light—photons—and your brain processes the view into something you can understand and, perhaps, act upon.

Don't act up.

Ziri had to keep his act up.

Ziri's knees started to act up.

The 2d law of chemical attraction is, that it takes place only between the most minute particles of bodies; therefore, the more you divide the particles of the bodies to be combined, the more readily they act upon each other.

My allergies act up during hay fever season.

Children may act up in class in an effort to get attention.

He started to act up, but she sat on him.