19. I am staying at home…. it is raining

a due to
b. owing to
c. because
d. because of
e. thanks to
20. she didn't go to the supermarket….her sickness
a because
b. because of
c. so that
d. therefore
e. as
21. When I go shopping in the supermarket, I always use a trolley… I won't have the problem
of bringing a lot of supermarket purchases
a. so that
b. due to
C. besides
d. Since
C. Because
22. Many animals died… the eruption
a. so
b. because of
c thus
d. therefore
e. for

19. I am staying at home…. it is raining