In order to find the missing child, villagers __________ all they can over the past five hours.
| A．did | B．do |
| C．had done | D．have been doing |
Thank you for all your hard work last week. I don’t think we________it without you.
| A．can manage | B．could have managed | C．could manage | D．can have managed |
He demanded that such things________from happening again.
| A．prevented | B．prevent | C．be prevented | D．were prevented |
________made the school proud was ____ more than 90% of the students had been admitted to key universities.
| A．What; because | B．That; what | C．What; that | D．That; because |
The water in the ocean also keeps the temperature of the earth steady by absorbing and _____heat.
| A．giving away | B．giving up | C．giving back | D．giving off |
. -----I don’t suppose the police know who did it.
-----Well ,surprisingly they do. A man has been arrested and________now.
| A．has been questioned | B．is being questioned |
| C．is questioning | D．has questioned |