I try to speak English ________ I can.

1. A.
   as soon as
2. B.
   as much as
3. C.
   as many as
4. D.
   as more as

[　　]

You should try to speak English as       as possible. 

I’ll try to speak English as ________ you do．

1. A.
   clear as
2. B.
   clearly as
3. C.
   clearer than
4. D.
   more clearly than