Busy _______ he was, he managed to spare some time to help plan the project.
| A．while | B．although | C．as | D．when |
The authorities declared that because of the war petrol was _____ and had to be rationed (定量供应).
| A．inadequate | B．rare | C．lacked | D．scarce |
I'm sorry but what he thinks is not of the _____ importance to me.
| A．merest | B．lowest | C．last | D．least |
Many people complain of the rapid _____ of modern life.
| A．rate | B．pace | C．speed | D．step |
The two dogs started to fight, so we tried to _____ them.
| A．split | B．separate | C．tear | D．divide |
As soon as Charles had _____ a little from his surprise, his one thought was to get away.
| A．returned | B．absorbed | C．dissolved | D．recovered |