– We really shouldn’t use paper napkins, you know.-- I know. I stopped _____ last year.
The boy looked __________ because he didn’t pass his maths test.
I think there will be _____ people and ______pollution.
-- Must I do my homework right away?-- No, you _____. You_____ do it later.
They arrived early at the airport, __________they had time to go shopping.
My father offered __________me to the zoo last weekend.