It was quite a long time ______ he really realized the serious situation.
The flowers his friend gave him will die unless every day.
— Have you finished your experiment report, Jane? — Oh, my God. I’ve _____ forgotten all about that.
People in Shaanxi are proud of they have achieved in the past ten years.
I promise _____ else can you find _____ better computer at such a low price.
It was dark and he had already lost his ________of direction.