--- Do you know him?--- Yes, but I can’t remember ______I met him for the first time.A. where B. what C that D. if
When I was a child, my father ______ read me a story at night before bedtime.
She has bought herself ______ dress
Although the small room is the large one, it is more beautifully decorated.
Wind power is an ancient source of energy we may return in the near future.
When changing lanes, a driver should use his turning signal to let other drivers know ___.