A great many cancers can be cured but only if______ before they have begun spread or 'colonize' in other parts of the body. A.properly treat B.properly treating C.being properly treated D.properly treated
A.A.properly B.properly C.being D.properly
【参考答案】
D 解析：很多癌症是可以治愈的，只要在癌细胞扩散到身体其他地方之前被正确的治疗。Only if引导的条件从句，从......