My uncle _____ to see me. He’ll be here soon.
David helps his mother with her housework every Saturday for about _____.
Professor Smith, along with his assistants, _____ on the project day and night to meet the deadline.
20.Tell John not to leave the house unless he_____________that the lights .
19.Mrs.Brown is so_________about her housework that few servants Want to work for her.
18.After you have used the dictionary,please just put it back_________it belongs.