题一: i’ve been working for over twenty years and seldom so tired as now. a.i have felt b.i had felt c. have i felt d. had i felt 题二: not only ________interested in football but ________ beginning to show an interest in it. a. the teacher himself is; all his students are b. the teacher himself is; are all his students c. is the teacher himself; are all his students d. is the teacher himself; all his students are 题三: once made out, the law must be carried out______ any difficulty. a. regardless of b. instead of c. because of d. in need of 题四: she has almost failed the exam, but her sister, ______, has done very well. a. by contrast b. in general c. for example