--Why are your group so happy?

  --Our group _______ theirs in the oral English competition.

  A. has won      B. have gained            C. has beaten         D. have defeated

 —Why are your group so happy?

—Our group ________ theirs in the oral English competition.

A．has won                                      B．have gained

C．has defeated                                 D．have beaten

—Why are your group so happy?  

—Our group __ theirs in the oral English competition.

A. has won            B. have gained       C. has beaten         D. have defeated

---Why are your group so happy?

---Our group ________ theirs in the oral English competition．

1. A.
   has won
2. B.
   have gained
3. C.
   has beaten
4. D.
   have defeated

—Why are your group so happy?

—Our group　　 theirs in the oral English competition.

A.has won　　　　　　 B.have gained　　 C.has beaten　　 D.have defeated