________ has been mentioned above，continued chairman after he took a sip of coffee，________ the project must be carried out before spring flood comes.
| A．As；that | B．That；which |
| C．This；which | D．It；that |
Gun control is a subject ______ Americans have argued for a long time.
| A．of which | B．with which | C．about which | D．into which |
Jane was asked a lot of questions, but she didn’t answer ______ of them.
| A．other | B．any | C．none | D．some |
This is the first time went______ a film in the cinema together as a family.
| A．see | B．had seen | C．saw | D．have seen |
He invited me to a dance after the show_______Christmas Eve.
| A．at | B．on | C．in | D．by |
Dr. Smith, together with his wife and daughters, _____visit Beijing this summer.
| A．is going to | B．are going to | C．was going to | D．were going to |