During his last lecture, the scientist______（觉得)easier to explain the theory to those

During the lecture, the speaker occasionally ___ ？

During the lecture, the speaker occasionally ___ ？

During the lecture, the speaker occasionally ___ h

During the lecture, the speaker occasionally ___

Which of the following sentences is INCORRECT？（2010)A．All his lectures are very interestin

During the last century standards of female beaut