The reason why we don't trust him is ________ he often lies．

1. A.
   why
2. B.
   that
3. C.
   because
4. D.
   for what

The reason  _____ he was late for the meeting was ____ his little son fell ill this morning.

1. A.
   for,that
2. B.
   why,that
3. C.
   for,because
4. D.
   why,because

The reason           she can finish the homework ahead of time is           she is both clever and hard-working.

1. A.
   why;why
2. B.
   why;that
3. C.
   that;because
4. D.
   for;because

The reason ____ she gave us for being late for school was ___ her bike broke down.

1. A.
   why; because
2. B.
   /; but
3. C.
   that; why
4. D.
   why; which

The reason for his absence from school was ____ he fell ill.

        A. because     B.why      C. what      D. that