Thank you for your help, Linda. You made ________ possible for us to finish the work in time.

The black bag isn’t_______. It’s________.

--- When shall we meet again?                   --- Make it __________ day you like. It’s all the same to me.

—______is the Changjiang river in China, do you know?—Yes, it’s about 6,380 kilometers long.

I find __________ very difficult to learn English well .