109．It took him an hour to do his homework last night．(改为同义句)

He_______ an hour________ doing hi s homework last night．

108．You’d better take a bus to the zoo．(改为否定句)

You’d better_________ _______ a bus t0 the ZOO．

107．He writes to his mother onee a month(对划线部分提问)

_________ __________does he write to his mother?

106．I don’t know French；She doesn’t know French，either．(合并为一句)

___________ She__________ I know French．

105．Don’t play with knifes．________

104．Would you mind close the door for me?__________

103．He hasn’t finded the key to the bike．______________

102．Boys are always exciting about playing football．_____________

101．That is too hard for me to work out the math problem．_________

100．Thank you for_________ 　(cook)this delicious meal for me．