题目内容
Swimming alone ____ be ____ dangerous. Do be careful.
A. need, highly B. may, high C. can; highly D. can; high
C
Can表示理论上的可能,highly表示抽象意义的高度危险。
练习册系列答案
相关题目
14.How can you cross the river _________ by swimming?
A.rather than |
B.more than |
C.less than |
D.other than |