【单选题】As a salesman, he works on a______ basis, taking 10% of everything lie sells.
【简答题】Everybody showed great respect to the old doctor, who devoted everything he had to _____ the poor conditions of the local hospital. A.improving B.improve C.improved D.being improved
【单选题】砌体水平灰缝的砂浆饱满度不得小于( )。
【单选题】As a salesman, he works on a ______ basis, taking 10% of everything he sells.
【单选题】.I know everything goes smothly from his________voice on the phone.
【单选题】砌体水平灰缝的砂浆饱满度不得小于( )。