I'm sorry, I _______ my pen at home. [ ]
A. forgeted
B. forgot
C. left
D. leaved
答案:C
She is a strong-willed woman and not once _____ in to any difficulty in her life. [ ]
A. she has given
B. did she give
C. she gave
D. has she given
装配中的测量包括正确合理地选择______,准确而迅速地______。测量的项目通常有______、______、______、______和______等。