Modals of deduction in past.

My mother ate some chocolate. The doctor said that she must avoid that.

• She must not have eaten chocolate

• She could have eaten a little.

• She should have eaten Nestle chocolate.

My cousin’s hair looks different.

• She could have cut a little.

• She might have painted her hair.

• She must have change her hairstyle.

Sophie didn’t attend classes.

• She must have gotten sick.

• She could have gotten sick.

• She might have gotten sick.

What is the modal that demonstrate the person isn't completely sure?

• must have

• could have

• should have

The doctor said my uncle died of Covid but my family and I think it__________ have been due to medical malpractice.

• may

• must

• could

My son ___________ have done that. He is hyperactive.

• could

• may

• must

Carmen looked very sad. She had 5/10 and _______________ passed her final exam.

• couldn't have

• mustn't have

• might have

The window of my car was broken. I think that a thief _______________wanted to take my wallet, but a police told that another car had crashed with mine.

• might have

• must have

• could have

I can’t believe my husband hasn’t arrived yet. He _______________forgotten our anniversary.

• might have

• Could have

• Must have

My best student got zero I didn’t know what happened. He ___________ visited his grandmother.

• may have

• must have

• could have