Information about the current foreign markets （） very important to our company. A: Ais B: Bwas C: Care D: Dwere

The work（）by the time you get there. A: Awill have been done B: Bwas done C: Chad been done D: Dhas done

Tom（）since he lost his job three weeks ago. A: Ahas employed B: Bwas unemployed C: Chad been unemployed D: Dhas been unemployed

下列哪种免疫缺陷病应用基因治疗可获得良好疗效（） A: A腺苷脱氨酶缺陷病 B: BWAS C: CSwiss型低丙种球蛋白症 D: DDiGeorge综合征 E: EBruton综合征