I SAW A BEAR WHILE I………IN THE FOREST.I SAW A BEAR WHILE I………IN T...

42. - BAI KIEM TRA 1 TIET SO 1 UNIT1UNIT3 E12 42. - BAI KIEM TRA 1 TIET SO 1 UNIT1UNIT3 E12
BAI KIEM TRA 1 TIET SO 1 UNIT1UNIT3 E12

42.I saw a bear while I………in the forest.

a.am walking b.walked

c.were walking

d.was walking