单项选择题
（） she got the first place in the final exam made her very happy.
A. That B. What C. It D. When
单项选择题 You （）be too careful when you are driving.
单项选择题 "Evil Under the Sun", （） is a famous detective story, is written by a Christie.
单项选择题 The child is （）young （）stay at home alone in the night.
