To live a low-carbon life , we must try to save _____ energy and produce ____ carbon .

Both of us are __________ with this ________talk.

Haven’t I told you that you should get home earlier?—Yes, but I __________ home earlier than I usually do.

Yu Bao was born _____ Nanjing _____ August 16th, 1990.[ ]

Mom, these are my friend Peter and __ brother Bill.–Welcome to our home. Come in, please.