B4

For years my husband, Tom, and I had complained bitterly about the lack of sidewalks in our village. We didn’t have enough exercise but we couldn’t / could not jog because there were no sidewalks.
(could – прошедшая форма от can)

 NOT CAN

B5

Tom had often told me, «If only we had sidewalks, we would jog or walk daily and become models of fitness».
(мне)

 I

B6

So we were thrilled when a community sidewalk project was announced, and watched eagerly as paving neared completion. Then the worst thing happened: wishful thinking and reality collided.
(bad – worse - the worst)

 BAD

B7

«Well, dear,» Tom said. «What’ll we use as an excuse for not walking now?» I said I would think of some excuse.
(reported speech, при переходе их прошлого в будущее will меняется на would)

THINK

B8

In the USA, Memorial Day is the last Monday in May. Memorial Day was declared a national holiday in 1971.
(past simple passive, т.к. этот день был провозглашён, а не сам что-то провозгласил)

DECLARE

B9

But the tradition of honoring those who died in defense of their country goes back to the Civil War. The tradition to hold memorial services, visit the cemeteries, decorate the graves with flowers and wreaths originated in Waterloo, New York, in 1866.
(их)

 THEY

B10

Since then, the tradition has changed. Nowadays, on Memorial Day Americans honor not only soldiers who perished in wars but those loved ones who have died.
(present perfect, т.к. традиция изменилась и остается изменённой до сих пор)

CHANGE