单项选择题
A. He wonders if he’ll have enough time to do the job. B. He is afraid he won’t know enough to do the job well. C. He fears that the job may be too boring. D. He thinks Professor Jamison has someone else in hand.
A. By forcing them farming. B. By .affecting the quality of soils. C. By adding chemicals and polluting the waterways. D. By ’affecting the environments they live in.
A.working in a paper factory. B.working in a youth club. C.looking after his brother and sister. D.looking after his young friends.