— What can I do to save energy?— You ought to the electricity when you leave a room.A. shut off B. give up C. take away
Monica, you ______ the exam! Congratulation!
Water is the cheapest drink. And it is also ______.
The teacher is already standing here. Do you know when she ______?
I’m busy now. I ______ to you after school this afternoon.
Eric arrived on time, ______ it was the rush hour.