At ____ present we are going through a hard time, but I’m sure ____ things will get better in the near future.

At ____ present we are going through a hard time, but I’m sure ____ things will get better in the near future.

A. the; the         B. the; 不填    C. 不填; the          D. 不填; 不填

At present, we are studying a total of nine subjects, ________ I think is physics.

A. of them the most difficult       B. and the most difficult of which

C. the most difficult of them       D. the most difficult of which

At ____ present we are going through a hard time, but I’m sure ____ things will get better in the near future.

At ____ present we are going through a hard time, but I’m sure ____ things will get better in the near future

1. A.
   the; the
2. B.
   the; 不填
3. C.
   不填; the
4. D.
   不填; 不填