Without a sure supply of water, farming in that area remains at the _______of the weather.
Mr. Smith ______ the grammar book meant for senior high school students and will almost finish it.
—We ______ hurry-there’s plenty of time. —So we can have a coffee nearby.
In the coming months, he looks forward ______ more time with his family.
-Have you made ______ apology to your mother? -Yes. I regretted speaking to her in ______ rude manner.
Nowadays, _____ growing number of Chinese students are going abroad to seek______ better future.