---Was it the new school headmaster who walked by ?
--- _____.
| A．It must be that | B．It must have been | C．He must be | D．This must have been |
Nowadays, a large number of women, especially those from the countryside, ____ in the clothes industry.
| A．is working | B．works | C．work | D．worked |
The local government in Shenzhen has recently passed a new regulation forbidding supermarkets and stores to _______ free plastic bags to shoppers, in order to protect the environment.
| A．give off | B．give in | C．give up | D．give out |
_______ I met him, he was working as a secretary in a big company.
| A．For the first time | B．The first time | C．The first time when | D．When the first time |
Only after they had discussed the matter for a few hours ______ a decision.
| A．they reached | B．did they reach | C．they reach | D．do they reach |
Apart from the opening and closing ceremonies and some key matches, ticket price will be____to ordinary people.
| A．available | B．considerable | C．acceptable | D．practical |