42. As a salesman, he works on a (an) _____ basis, taking 10

42.As a salesman,he works on a (an) _____ basis,taking 10% o 42. As a salesman, he works on a (an) _____ basis, taking 10 Mr Jiang is a salesman.He works in Moon on an as is basis He asked me to come in on a short-term basis as a consultant he works as a teacher on a rolling basis He works as a teacher now,but he ___ on a farm for 3 years.A He works as a bank clerk. 本题选择什么15.He works as a teacher now,but he________ on a farm So he stared work ____ a salesman for a durg company.A.on B. He works as an office worker in a company（划线部分提问）.