1. Mark said that it was because of his strong interest in biology ______ he chose the course.

A. that¡¡        B. what¡¡           C. why                     D. how

2. --Were all five people in the car injured in the accident?

--No, ____ only two who got hurt.

A. it were          B. they were   C. it was           D. there was

3. It is not how much we do but how much love we put into what we do ______benefits our work most.

A. who          B. which        C. that             D. what

4. --I’ve read another book this week.

--Well, maybe ______ is not how much you read but what you read that counts.

A. this         B. that        C. there            D. it