---Does your brother serve in the army?---No, not now. But he ________ in the army for 8 years.

—How long have you been going to work on foot?—Since last month when I ________ from a heart attack.

She put the sugar and butter into a bowl and ________ them up.

-- Why was Mr. Wang so happy this morning?-- Because he was ______  a large sum of money for his creative achievements in teaching.

 At last, we found ourselves at the foot of a hill with trees providing shade and      ________  down to eat our picnic lunch.