-- I’ ve     using plastic bags when shopping. -- You’ re right. It’ s good for our environment.

It takes ________ half an hour ________ on foot.

— Is your mother a bus driver？— Well, she _______________, but now she is a shopkeeper.

–Could I _____ this book?--Sure. But you can only _____ it for one week.

Don’t _______ about the exam so much. It will make you stressed out.