It be the vocabulary that caused you the problem in the exercise because you know a lot of words.
Though _______ money, his parents managed to send him to university.
When I opened the door, I found my father sitting in his chair, completely _______ a magazine.
John rushed out in a hurry, _________ the door _________.
A quarrel _____ last Sunday, and he _____ his family.
Most of the factories under ___________ have been designed by Chinese engineers.