Tom full marks, but he was too careless and made a spelling mistake.A. could gai
来源：网络
时间：
推荐文章
Tom _____ full marks, but he was too careless and made a spelling mistake.
A. could gain??????? B. could have gained????????????? C. must have gained????????????? D. must gain
试题答案
【答案】
B
【解析】
试题