one,cannot,help,,,,,sorry,for,the,injured(一)英语第一轮复习练习题非谓语动词
英语测试(一)
PartⅠChoices(50×1)
1.__________ a language requires time and effort.
A. Learn B. Learning C. To learn D. Being learned
2. It is not always easy __________ invitations.
A. to refuse B. refusing C. to be refused D. being refused