In that school, English is compulsory for all students, but French and Russia are ____ .
#18975
A
special
B
optional
C
regional
D
original
推荐题目
Once harm is _______ to the eco-system, all species will ________, including man himself. 
#19350
A
made; be in danger
B
done; be dangerous
C
caused; be endangered
D
done; be in danger
Though he started late,Mr.Guo played the piano as well as,if______,Miss Liu.
#20394
A
not better than
B
not better
C
no better than
D
no better