A: Did you solve _ problem you were discussing at the meeting? B: No, we didn't. It was _ difficult problem we had never met. A. the, the B. a, a C. the, a
Did you know that the earth is home to________animals?
The little girl was________nervous that she couldn’t say a word in public.
—How long have Mr.and Mrs.Smith________?—For more than twenty years.
—English isn’t as________as Chinese.—Maybe,perhaps it’s just because Chinese is your native language.
The book was________interesting________I________wanted to read it again.