题目内容：

人教版英语必修四课习题填空
battle circulate comment confuse discover equip expand export focus produce regret struggle sum
1.the news about jeff“s success quickly ——————around the school
2.the————of his study was on the——of chinese products
3.in an interview,jeff ——that he had only one——
4.before,he often——to understand the ————world of business
5.he was studying english to ——himself for his new job

优质解答

1.expand
2.focus circulate
3.discover comment
4.confuse export
5.equip

追问：

那个时态不用变化的嘛