I’m afraid we’ll have to work extra hours, for there are still some problems ．
| A．remaining to settle | B．remaining to be settled |
| C．remained to talk about | D．to remain to discuss |
There is no experience you can have ______ is more exciting than skating on real ice.
| A．of which | B．what | C．that | D．with whom |
BMW’s boss _____ the decision to fire 8,000 employees, saying the group needed to continue cost-cutting.
| A．witnessed | B．advised | C．defended | D．adopted |
Mr. Black left for Beijing this morning, his secretary ______ him there this Friday.
| A．joins | B．joined | C．joining | D．to join |
--- The fog is so thick that the express way ____ have been closed.
--- You are right. I ____ have thought of that. Now we have to take another road.
| A．can; should | B．may; can | C．should; must | D．must; should |
So sudden ______ that the enemy had no time to escape.
| A．did the attack | B．the attack did | C．was the attack | D．the attack was |