2019年mpacc考试英语真题——其他149

{01}Noone has _____ been able to trace the author of the poem.

A.still

B.yet

C.already

D.just

解析：
yet 常用于现在完成时的否定句中, 意为“尚, 还”。
本题选B。

{02}填空题。
1. In 1846, the United States____    (向……宣战 ) Mexico.
2. They  _____ (定居 ;习惯于) new towns.
3. ____  (人们相信)that before long the mix of nationalities will be so great that there will be no
    distinct major racial or cultural groups.
4. I ____  (一起合作 ) a couple from my hotel and hired a car.
5. He was puzzled by a math problem and then a new idea suddenly___ (使想起) him.
解析：
本题选1. declared war on
2. settled in  
3. It is believed/People believe
4. teamed up with 
5. occurred to。