English is ___ useful language.
By the time the girl comes back to life,scientists probably________a cure for this incurable disease.
With proper measures,the economy in China is beginning to ________again.
I’ve been writing this report________for the last two weeks,but it has to be handed in tomorrow.
Provide your doctor with a detailed medical history________he can give you accurate treatment.
While working outdoors,Linda was________by the heat and fell to the ground,unconscious.