Even though there is________ fuel, the current rate of increase of energy consumption can’t continue for any longer.
Each time ______ they met, they would talk long hours together.
You needn’t go to the railway station by taxi because it is within walking ____. It only takes five minutes to walk there.
—Mum,I want to play computer games now.—Sorry,you can’t ______ you have finished your homework.
Mr. Daniel is now in our school, but he once __ in NO. 1 Middle School for three years.
— I’ve just been to my first language class.—Oh really? ________ . Which language are you studying?