Gun control is a subject _____ American have argued for a long time.
| A．of which | B．with which |
| C．about which | D．into which |
34. The CCTV Spring Festival Evening Party is a big stage, ________ many new actors or actresses are to become famous.
| A．where | B．when | C．that | D．Which |
33. The father asked the boy again, raising his voice a bit, but still ________ no reply.
| A．receiving | B．received | C．had received | D．to receive |
32. It was 8:30 in the evening ________ the soldiers arrived at the village.
| A．that | B．since | C．before | D．When |
31. ________ each other for long, the two brothers decided to meet soon.
| A．Not having seen | B．Not seen | C．Having not seen | D．Not seeing |
30. Pupils usually would like to take ________ advice their teachers give.
| A．whichever | B．however | C．whatever | D．Whenever |