--Spacecraft "Discovery" has failed in the course of launch.
--_____? They have been preparing for the test.
| A．How come? | B．When | C．What for | D．Why not |
相关试题
Scientists have many theories about how the universe ___ into being.
| A．came | B．was coming |
C．had come | D．would come |
According to the art dealer, the painting ______ to go for at least a million dollars.
| A．is expected | B．expects | C．expected | D．is expecting |
Susan decided not to work on the program at home because she didn’t’ want her parents to know what she __________.
| A．has done | B．had done | C．was doing | D．is doing |
Nowadays, a large number of women, especially those from the countryside, _________ in the clothing industry.
| A．is working | B．works | C．work | D．worked |
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