Mr Jackson hasn't decided this weekend．（ ）
| A． |
where he will have a picnic |
| B． |
where will he have a picnic |
| C． |
where he had a picnic |
| D． |
where did he have a picnic |
Life__________ be easy or difficult，sometimes it depends on how you look at it.（ ）
A．can'tB．mustC．can
Everyone needs to know __________ importance of rubbish sorting（分类）.（ ）
A．anB．不填C．the
The spirit of ox（牛）_________ an important role for China's development this year.（ ）
A．is playingB．was playing
C．played
With the help of 5 G technology，the apps on the smart phone can provide ____________functions for the users than before.（ ）
A．manyB．moreC．most
___________ we continue to pull together，we'll keep winning the game.（ ）
A．As long asB．Even though
C．As soon as