---            has your grandma been like this?   --- Since last night.

—  Does your son like carrots? — ________. 

—Mr. Wang’s never been to Canada, has he?—   . He went there on business last week.

—I don’t suppose Jimmy could have done well in the mid-term exam last week,______?--- ______ he almost failed in the exam．

— _______ will you stay in Shenzhen for your summer vacation?— For about two weeks.