1.Tom is

1.Tom is -----his height.a.rather thin b.too thin for c.so thin for d.very thin of
2.He knew-----little French that he could'n make himself understood.
a.so b.such c.too d.very
3.The stars are----when here is no moon
a.the brightest b.brifhtest c.more brigter d.much bright
4.the buses run every----minutes.
a.other b.many c.a few d.few

1.b 第一小题的原因我也不太确定了,没有找到合适的依据,是凭感觉做的.
2.a 当little表示数量时,虽然后面的中心词还是名词,也要用so修饰.
3.a 意思是“当这儿没有月亮时,星星最亮.”c和d的表达就不正确,b少了the,最高级前面必须有the.
4.d every few minutes表示“每隔几分钟”.