If you want to get this job，you should___________ speak a foreign language.

The growing speed of a plant is influenced by a number of factors，________ are beyond our control.

Listen! Who out of the classroom—It must be Lily.

The first day of school, my teacher says “I” ____a word in English.

Mr. Smith was ________ UNICEF officer. He came to the village and changed the poor girl’s life.