Our eyesight will become poorer and poorer ______ we keep playing with phones．（ ）
| A． |
though |
B． |
unless |
C． |
if |
Children should ______ to be honest from a young age．（ ）
A．educateB．be educated
C．punishD．be punished
______，we saw the sun rise on top of Mount Tai．（ ）
A．LuckyB．LuckilyC．UnluckyD．Unluckily
The talent show is ______ the game show．I like both．（ ）
A．as boring asB．not so bored as
C．as interesting asD．not so interested as
Our country is taking action to ______ air pollution．（ ）
A．cut downB．cut upC．cut outD．cut off
The girl in the classroom ______ be Sarah．She has gone to the library．（ ）
A．mayB．mustC．can'tD．needn't