The lectures, ______the current international issues, are very well received.A．are covered

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 ___

So little______ about stock exchange that the lecture was completely beyond me.A．did I kno

So little______about physics that the lecture was completely beyond my understanding.A．I k