The road was covered with sand ______ the heavy sandstorm.

Bobin thought his friends would do something ______ to celebrate his birthday, but they just gave him a birthday card.

Tom didn’t work hard at his lessons. ______，he failed in his exams．

ering your salary, you should _______at least 100 dollars a week.

Howdo you spend your weekends—At weekends I prefer _______ at home to _______ out.