问题
选择题
There is useful book and interesting magazine on the desk. They are my brother’s.
A.a, an, all
B.a, a, both
C.a, an, both
D.an, a ,all
答案
答案:C
useful中的首字母u发的是/ju/非元音,故用a;而interesting中首字母i发的是/?/为元音,故用an;这里只有两本书,故用both,而all用于三者及以上,故选C。