With the exception of mercury, ……… at standard temperature and pressure.
Mars, the fourth planet from the Sun, ...... of sky gazers.
The foreign student advisor recommended that she ……… more English before enrolling at the university.
The more advanced the specialization in production and the more complex the economy, ……… to make any given good reach its ultimate user by using barter.
……… in the desert is mainly due to the limited supply of desert water.
Only after food has been dried or canned ……… .
Elementary schools in the United States provide formal education ……… arithmetic, science, social science, and communication skills that include reading, writing, spelling, and speaking.
کدام گزینه جای خالی جمله زیر را به درستی پر میکند؟ By the time you arrive, we _____________ dinner.
Will you please write about John Cabot ....... Abigail Adams?
I ....... to the concert every Monday on the radio and I imagine I am there listening to it in person.