Air Macao on Wednesday _____ a new air route which _____ Macao with Guilin.

A. has opened; joined                          B. began; uniting

C. turns; lead                                     D. started; connects

Air Macao on Wednesday ________ a new air route which ________ Macao with Guilin．

1. A.
   has opened; joined
2. B.
   began; uniting
3. C.
   turns; lead
4. D.
   started; connects