Who’s that man in our classroom It ________ be Mr.Brown. He is much taller.— You mean the man in white He is an exchange studentfrom England.

The teacher got very ________ when the boy refused to answer his question.

Simon made a big bamboo box _______ the little sickbird till it could fly.

My classmates insisted that I ________ the school field trip to Jilin.

Remove the batteries when they become weak or when the unit is not in use for extended periods. This will damage to the unit from battery leakage at such times.