If you _____ smoke, please go outside because this is a non-smoking office.

— Li Lin hasn’t turned up yet, but he promised to come to the party.— He ______ home. He is a man of keeping his word.

I like playing        basketball and playing        erhu. 

Lisa is going to clean her _______ room when she _________ back from school next weekend. 

—Whose workbook is this, Tony?—Look! Ann's name is on it! It ______ be hers.