19.
(A) rises
(B) arises
(C)rose
(D) arose

 the sun always rose in the east and set in the west

同一句話的時態需相同，後面西沉用過去式(若為現在式會+s)，所以選rose

[HINT] rise

=to move upwards ： At 6 a.m. we watched the sun rise.

=to increase： Inflation is rising at/by 2.1 percent a month.

=emotions start to increase ：She felt panic and terror rise in her whenever she thought of the future.

=to become important ： She quickly rose through the ranks to become head of marketing.

=to oppose or fight a bad government or ruler ： The people rose (up) against the oppressor/tyrant/dictator.

[HINT] raise

=to lift something to a higher position：raise your hands

= to cause something to increase ：Our little chat has raised my spirits.

=to cause to exist：The chapel was raised (= built) as a memorial to her son.

=to take care of a person：Her parents died when she was a baby and she was raised by her grandparents.

我自己的理解是：rise是自主的、raise是去要外力的