You must read the instructions carefully_________ you take the medicine.
A．as B．after C．while D．before
Superstars should pay more attention to their behavior because what they do can have a great ________ on teenagers.
A．change B．surprise C．progress D．influence
—I’m sorry. There was too much traffic on the road.
—Never mind. The meeting ________ for only 5 minutes.
A．has begun B．has stopped
C．has been on D．has finished
On March 29th ， the Chinese football team managed to win an important match. Their success shows nothing is ________ if we try our best to make it.
A. impossible B. helpless
C. possible D. helpful
—_______ is your school like， Ann?
— It is a large and beautiful campus with a 50-metre-long swimming pool.
A．How B．What C．Where D．Why
The environment in Nanjing will be ________ than it was before if we all keep working for it.
A. much better B. more serious
C. quite bad D. even worse
