76．An actor must take ________ (act) lessons．

75．You must ________ (finish) my homework first．

74．I can enjoy ________ (swim) in the river．

73．I like ________ (health) green vegetables．

C)用括号中所给动词的适当形式填空。

72．My mother goes to Beijing ________ (two) a year．

71．He is not as ________ (friend) to us as his sister．

70．Li Yundi is a great ________ (piano) in the world．

69．A good ________ (read) is good at reading．

68．You have to do the ________ (dish)at home．

67．In our class, my home is the ________ (far ) from school．