【单选题】The engineer spent the whole night __________ on the new device.
Ato work
Bworking
Con working
Dworked
相关试题
-
【单选题】The engineer spent the whole night __________ on the new device.
-
The teacher spent almost the whole afternoon__________the studentshomework.
-
The boys spent the whole morning( ) possible answers to the question.
-
At night the whole building was beautifully ________ by moonlight.
-
John’s score on the test is the highest in the class; he _____ last night.