问题
选择题
To our great joy, his health has improved ______.
A．a good many
B．a great deal
C．a large amount
D．a large quantity
答案
答案：B
考查短语辨析。a good many 许多，后修饰可数名词复数，a great deal 副词，大量，非常，C和D后加of 才能构成短语，句意：使我们非常高兴的是，他的健康大大提高了。所以选B。