97.We___________ (have) a geography class this Friday, aren't we?

96.Mrs Black was always busy__________ (wash) clothes when I saw her.

95.--Jane doesn't look well these days.

　 ---Don't you know she___________ (be) ill since three days ago?

94.--Bob, dinner is ready ! Where's Dad?

　 --He___________ (mend) my bike in the garden .

93.--What a beautiful fridge! How long have you had it?

　 --For two months. It__________(buy) on my last birthday.

92.--I can't fund my glasses. Have you seen them?

　 --Yes, you__________(leave) them in the car yesterday.

91.You can't cross the street until the light___________(turn) green.

90.His father has been dead for two years.

　 It's two years __________his father___________.

89.Tom won't visit the farm. He'll stay at home.

　 Tom will stay at home____________ __________ visiting the farm.

88.The little girl is too young to go home by herself.

　 The little girl isn’t _________ ___________ to go home by herself.