基本信息
1.______ the baby could speak made his parents very happy.
A. That B. What C. Why D. If
2. I wonder ____ you will go shopping or stay at home.
A. that B. if C. whether D. what
3. This is _____ he was often late for school.
A. what B. that C. why D. whether
4. We all know the truth ____ the earth ____ around the sun.
A. if; moved B. that; moves C. why; move D. whether; move
