A botanist who speaks and writes English is in closer touch with the scientists in other countries than who doesn’t.
It was on a cold winter evening_______ his father left home and was never back.
These books are for students ____ mother language is not English.
From his _______ expression on his face, we know he is _______.
When the audience heard the funny story, they _____ laughter.
If anybody calls, tell them I’m out, and ask them to _______ their name and address.