The musician recalls that he was so interested in the instrument that he drew six lines on his desk in school, ________ guitar strings, and practiced day and night.

The school year is divided into two semesters, __________is September through December.

Flora _______ her homework at 8：00 p.m. yesterday

The differences_____ these two pictures_____ colour are easy to see.

Though Jack was poor and sick, he never ______ any chance to write. That is why he finally became a successful writer.