—Listen! Who _____ in our classroom? —It must be Steve. He ______ very beautifully. A. is singing; sings B. is singing; is singing C. sings; is singing
—It's reported that some capsules(胶囊) are really bad for our health.
—Sounds terrible. Hopefully the problem ___ as soon as possible
A is solved B. has solved C. was solved D. will be solved