Drink-driving has ____ many traffic accidents , so the government made new laws to forbid it .

Educationists across China are experimenting and trying out new assessing systems _______to assessing students’ performance in school.[ ]

Have you seen a tall boy ______ a basketball ______into the building

The doorkeeper gave the alarm _______ he sawthe smoke

Dad, do you know ______ now—In Fort Middle School.