We understand _______small changes to our land can have a big impact upon our environment __________ as we know is vulnerable enough.
A.what; which | B.what; where | C.how; where | D.how; which |
相关知识点
推荐试卷
We understand _______small changes to our land can have a big impact upon our environment __________ as we know is vulnerable enough.
A.what; which | B.what; where | C.how; where | D.how; which |
试题篮
()