What will we do when all the oil in the world has ?
| A．run out of | B．been given out | C．been used up | D．given off |
— Li Lin hasn’t turned up yet, but he promised to come to the party.
— He ______ home. He is a man of keeping his word.
| A．can’t leave | B．won’t be leaving |
| C．could have left | D．must have left |
The rescue team didn’t leave until they were able to find no ______ of life in the ruins after the destructive quake.
| A．symbol | B．sight | C．sign | D．signature |
______ all the texts that are written, stored and sent electronically, a lot of them are still ending up on paper.
| A．For | B．From | C．Except | D．By |
Science is more than a collection of unrelated facts; to be meaningful and valuable, ______ must be arranged to show generalized character.
| A．which | B．those | C．it | D．they |
A warm thought suddenly came to me ______ I might use the pocket money to buy some flowers for my mother’s birthday.
| A．that | B．when | C．if | D．which |