During the course of its growth, a frog undergoes a true metamorphosis ……… with a fishlike larval stage.
The foreign student advisor recommended that she ……… more English before enrolling at the university.
During the course of its growth, a frog undergoes a true metamorphosis ……… with a fishlike larval stage.
کدام یک از گزینههای زیر صحیح است؟ .
One morning an old lady turned ....... at the dining room and sat down.
کدام یک از گزینههای زیر صحیح است؟
The problem facing most tourists is ……… among so many possibilities.
Medical research at the cellular level, ……… research on the immune system, has been made possible through twentieth-century advances in techniques of genetic research.
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.
What ....... be doing this time tomorrow?