When Jim’s mother came in, he _______ his homework.A.is doing B.has done C.was doing
________ went hiking last weekend because of the bad weather.
We ________ used computers years ago, but now they are everywhere.
---________ does your mother go for a walk? ---Every afternoon.
---Do you want to tell us ________ important? ---No.
An Englishman always brings ________ umbrella.