--- He has to finish the experiment today. He must be in the lab,____?---That s quite possible.
She really impressed me a lot for I had never heard ______voice.
Every year _______ students attend the college entrance examination, and ______ them can be admitted into their ideal universities.
It’s really a pity that the heavy rain ______ to go for a picnic.
_______ we were studying abroad, we learned much about foreign culture and customs.
_______ himself ______ clearly, he raised his voice.