There are many young children _____ in the park. [ ]
A.
playing
B.
are playing
C.
play
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【判断题】The beauty of portable apps is that you can carry your software and your data on removable storage, such as a hard drive, and plug it into any computer.
【单选题】The beauty of portable apps is that you can carry your software and your data on removable storage, such as a ____, and plug it into any computer.