____ printed, this science fiction will be popular among the students.
| A．Before | B．Unless | C．When | D．Once |
_____ mobile phone is very convenient, school children are not allowed to own one.
| A．If | B．While | C．Because | D．When |
Lucy didn’t do well in this exam, ______ made her mother quite unhappy.
| A．that | B．it | C．which | D．this |
-- What do you think of __________ school sports meeting ?
-- _______ great success.
| A．不填, A | B． the, A | C． the, The | D． the,不填 |
--- They are quiet, aren’t they? --- Yes. They are accustomed __________ at meals.
| A．to talk | B．to not talk | C．to talking | D．to not talking |
Occasions are quite rare ____ I have the time to spend a day with my kids.
| A．who | B．which | C．why | D．when |