-How can I improve my spoken English?
-I suggest you________ English every day.
A:practice speaking
B:to practice to speak
C:will practice speaking
D:racticing to speak
伦____
埃____
论____
挨____
用显微镜观察时,如果光线过弱,应选( )
计算32×12+2×5的结果估计在( )