To test eggs , ___them in a bowl of water: if they float they are bad; if they sink they are good.
| A．put | B．putting | C．to put | D．to be putting |
______ 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 |
We, ______ a discussion with the teacher, came to understand the problem better.
| A．holding | B．held | C．being held | D．having held |
Cooking calls for ______ patience and time but it is ______ enjoyable experience.
| A．a; the | B．the; an | C．/; an | D．a; / |