The government must be very _____ about setting policies and make no decision until they are quite sure it is the right one.
| A．particular | B．concerned | C．cautious | D．certain |
. We are now living in an age _______ many things are done on computer.
| A．when | B．where | C．how | D．why |
The mayor of Shanghai says that all construction work for the World Expo ______ by now.
| A．has been completed | B．has completed |
| C．will have been completed | D．will have complete |
.Most of them have no doubt _______ he will pass the driving license.
| A．whether | B．if | C．that | D．how |
. It is believed that this book is ______worth reading than that one.
| A．more | B．better | C．quite | D．most |
Two middle-aged passengers fell into the sea. _______, neither of them could swim.
| A．Actually | B．Unfortunately | C．Naturally | D．Luckily |