--Remember to keep the dog on a leash ()________ you walk it, honey! --Sure. I won’t let it hurt others.
(A) until
(B) after
(C) while
(D) since
The Correct Answer
The Internet has brought __________ big changes in the way we work.
（A）about （B） out （C） up （D） back
Correct Answer: A
Which do you enjoy our weekend, fishing or watching TV?
（A）spending （B） to spend （C） being spent （D） spend
Correct Answer: B
___the production up by 60%, the company has had another excellent year.
（A）As（B） Because （C） With（D） While
Correct Answer: C