Premise:
"Good heavens! cried Miss Howard. "
Hypothesis: Miss Howard cried very easily.

it is not possible to tell

Premise:
"The shadow covering his town looked like the black clutch of hell."
Hypothesis: The shade was covering the city.

yes

Premise:
"It's for jewellery, I believe, but there might be something else in it. The key was in the lock, and Julius swung open the door, and searched inside."
Hypothesis: Julius opened it up and looked inside.
yes