问题
选择题
---Tom is always making so many mistakes in his English exercises!
--- Yeah. If he ________ more careful, he ________ fewer mistakes.
A．was; will make
B．is; would make
C．were; will make
D．were; would make
答案
答案：D
题目分析：句意：汤姆总是在英语练习中犯那么多的错误！—如果他能更细心一些，他就会犯更少的错误。
表示与现在事实相反的假设，If+主语+动词过去式（be动词用were），主语+would/should/might/could+动词原形。根据题意及句型，故选D。
