English - Cloze Passage 2

Fill in the blanks with the most suitable words.

The words you can choose :

at , lightning , trembled , was , rain , but , thunder , while

One dark night , ________ little Jimmy was sleeping , ________ roared and ________ flashed. He woke up as he heard a strange noise, He tried to figure out what it was, ________ he could not. As the sound came closer , he ________ helplessly under the blanket. Suddenlt, the door was opened and he saw something horrible.