1 . And when your employees begin ______(add) smilling emojis to their business communication, you’ll know you have succeeded in __________(improve) your work culture. (所给词的适当形式填空)

2 . There have been several new events ________ to the program for the 2008 Beijing Olympic Games.

A．add

B．to add

C．adding

D．added

3 . Nowadays, cell phones have features such as games, music and calendars and more new functions ________ (add) in the future.（所给词的适当形式填空）

4 . It is essential that students not be________to their classroom and________their knowledge to social life.

A．limited, apply

B．limit, lead

C．limits, add

D．limiting, use

5 . He explained the problem we faced and________ (补充说) that all the money we collected only________ (总共是) half of what we needed and that the coming cold weather would definitely________ (增加) our difficulties. （根据汉语提示完成句子）

6 . Please ________ the numbers and I’m sure they will _______ 1000.

A．add, add up	B．add up, add up
C．add up, add up to	D．add to, add up