77. How long does it take？ Oh，it d______　 on where you are and the means of　 transportation.

76. Hurry up， there is only a little time l______ .

75. Don't w______ about me. I can look after myself.

74. It takes me t______ m______ time to clean my room，I am m______　 t______ tired.

73. We should plant a lot of trees to make our city beautiful. The m______ trees，the better.

72. The museum is very f______　 from here， but you can take the subway to get there.

71. I have two cats. One is white， the o______　 is black.

70. Lily r_____her bike to school.= Lily gets to school o_____her bike.=Lily gets to school b_____bike.

69. In South Korea，most students get to school b_____subway.

68. Travelling by ship is a lot m______ fun than taking a bus.