There have been many cases reported by residents of stray dogs going through an
open window and eating the food a family was preparing to have for dinner. These
dogs just didn't magically appear out of thin air. A majority of them were
______ household pets. Our community must ______ from abandoning their unwanted
pets. We have recently begun an adoption program to get the
problem ______ control. We would like volunteers to come out
and help us. Call us at 080-234-7787 for further information. Please remember!
It's everybody's problem!
单选题
A. before
B. once
C. soon
D. shortly
【正确答案】
B
【答案解析】[解析] 词性：副词
1．本题考查be动词后接副词的用法。
2．虽然before也用作副词，但只用在末尾，如two days before：两天前。
3．once用作副词时表示“曾经”，原句意思是“大部分的流浪犬曾经也都是宠物”，因此once是正确答案。