肺炎链球菌肺炎首选
A．青霉素CB．氨苄青霉素C．红霉素D．氧氟沙星E．庆大霉素
参考答案：A
––I didn’t go to work yesterday because my car broke down.
––You _____ mine. I wasn’t using it then.
A．might borrow
B．should borrow
C．must have borrowed
D．could have borrowed
—Mum, I can't see any point in studying hard.
—Come on. dear,Years of hard study will surely in your future career.
A．make sure
B．pay off
C．bring back
D．pay back
