Tom，you’ve got an A in the final English exam．Congratulations!一Thanks．But I never thought the result came out so fast．The paperswhen I left the Teacher’s office just now

This is a very interesting book. I’ll buy it, _____. [ ]

My ______ sister who works in the bank is two years ______ than I.

He wrote this article ____this great communist fighter, DrBethune

sent, 1 in every 10 people isaged 60 years or older, ______ in 2050, 1 in every 5 people will be aged 60years or older.