We may find that learning a foreign language does not have to be________learning our mother tongue,but can in fact be twice ________.
At 13,Samuel received a training course in drawing for three years,________ he got a good opportunity for further development.
Her sister has become a lawyer,________ she wanted to be.
Let’s talk about the persons and the things ________ we can remember.
So far all cloned animals have suffered from some different serious disorders,________ dying soon after birth.
The students ________ are expected to pass.