For many years we have been keeping in ____by sending each other e-mails or phone calls.

How ______ Cindy grows! She’s almost as tall as her mother now.

hat do you think of genetically modified food (转基因食品)? —We all think ______ is careless ______ some scientists to say it is safe before doing any experiment.

Which club would you like to join, art club or basketball?— _______ is OK. I’m good at them.

This morning Jack came to school _________ than _________ student in his class.