The river smells terrible. People_______ dirty things into it .

Tom’s teacher and friend Mr. Smith.　　

hat happened to the young trees we planted last week—The trees _________ well, but I didn’t water them.

Prices of the basic necessities of life have been going up sharply since word came that war would________between the two countries soon.[ ]

Two American couples each ___ aChinese girl and they happen to be twin sisters.