--Where is Mother?
---She is in the kitchen. She ______ the housework all morning.
| A．is doing | B．was doing | C．has done | D．has been doing |
The country has already sent up three unmanned spacecraft, the most recent ________ at the end of last March.
| A．has been launched | B．having been launched |
| C．being launched | D．to be launched |
So much of interest ________ that most visitors run out of time before seeing it all.
| A．offers Beijing | B．Beijing offers | C．does Beijing offer | D．Beijing does offer |
— Did you remember to give Mary the money you owed her?
— Yes, I gave it to her ________ I saw her.
| A．constantly | B．directly | C．suddenly | D．supposedly |
The good thing about children is that they ________ very easily to new environments.
| A．adapt | B．appeal | C．adopt | D．apply |
He had his camera ready ________ he saw something that would make a good picture.
| A．even if | B．soon after | C．in case | D．so that |