73. Wash the clothes.(改为否定句)

　 ________ wash the clothes!

72. What time is it? It’s time to have dinner.(改为近义句)

　 ________ the time? It’s time ________ dinner.

71. She is catching insects now.(改为一般现在时)

　 Sometime she ________　 ________ in the park.

70.　 The ________ (American / America) boy is new here. We should be 　________(friends / friendly) to ________(his / him).

69.　 Mr. White and his daughter, Ann, ________(is standing / are standing) under a big tree now.

68.　 Liu Ming _______(were / is) a student. He ________ (studies / studying) in our school.

67.　 There are 50 students in our class. Mike is the ________(taller / tallest) of us.

66.　 Mr. Smith and Mrs. Smith ________ (is / are) in the same school. Mr. Smith ________ (teacher / teaches) English, but his wife__________ (doesn’t / don’t.).

65. -A: Can I have ________ envelope and any writing ________?

　　　　　　　　　 　-B: __________?

　　　　　 　-A: I want to write to my pen friend.

A. a; paper; What’s for　 　　　　　　　 B. an; papers; What’s for

C. an; paper; What about　　　　　　　 　　 D. an; paper; What for

64. That isn’t ________ ruler. ________ is in my desk.

A. your; My 　　　　　　　　　　　　　　　　 B. my; Your

C. his; Mine 　　　　　　　　　　　　　　　　 D. my; Mine