In the following passage, some words have been deleted. Read the passage carefully and
select the most appropriate option to fill in each blank.

Dust storms do not just happen in the middle of the desert. They can happen in (1)______ dry area where loose dirt can (2)______ be picked up. Don’t be surprised (3)______ you suddenly saw a dust storm (4)______ your way. Dust storms usually (5)______ without warning.