.
We will learn how to operate the machine _______.
| A．at a time | B．at one time | C．at the time | D．in time |
They had planned to go for a picnic, but because of the rain they had to stay home_______.
| A．instead | B．really | C．however | D．though |
. Many people are quite at a loss as to what to do _______ a real fire.
| A．in honor of | B．in need of | C．in case of | D．in form of |
---- I haven’t got the ticket for the opening ceremony of the 2010 Shanghai World Expo.
---- Don’t worry. It’ll be broadcast_______ on April 30. Don’t miss it.
| A．lively | B．alive | C．live | D．living |
The government should protect the old valuable buildings_______ they are not in harmony with the modern ones nearby.
| A．even though | B．as if | C．so that | D．now that |
Do come here tomorrow_______ we, as planned, will enjoy the wonderful performance together.
| A．otherwise | B．or | C．and | D．therefore |