You could visit ____ children in the hospital and _____ them_____.

uld have gone fishing yesterday,butit ______all day.

With the advances of technology, plastics have taken the place of many ________ materials.[ ]

Who____coooking in your familyMy grandparents____.They can cook very drlicious foot.

the old man know the museum verywell—No, this is the first time he __________here