職稱英語綜合類完形填空練習(xí)題4(3)

2. A) burst
    B) explode
    C) opened
    D) disappeared
    3. A) gained
    B) made
    C) lost
    D) disappeared
    4. A) emerged
    B) merged
    C) has combined
    D) mixed
    5. A) what
    B) which
    C) where
    D) that
    6. A) expand
    B) to extend
    C) expanded
    D) extended
    7. A) called
    B) calling
    C)to call
    D) calling on