There __________great changes in our hometown in the past fifteen years.

Hi,where are you goingSee what the sign______!–Sorry,I__________it.

____ __ have you been at thisfactory– Since 2000.

__ your composition carefully, some spellingmistakes can be avoided

Do you think the thief entered through the back door—No, if he had, I don’t believe he ______ theliving-room window.