A) Five times B) Five C) Fifth D) Fifth time
2. There are___ students in the class.
A) forty B) forteen C)forty D)forties
3. Rive has been cultivated in the East for ___ years.
A) several thousands B) several thousand C)thousand of D)several
4. China exploded ___atom bomb in October 1964.
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A) its first B) its one C)a first D)the its first
5. Save the best for ___.
A) the last B)last C)its last D)a last
答案:1 a 2 c 3 b 4 a 5 a
