Please Wait. Maintenance in Progress.()。

He made rapid progress in his studies.（英译中)

Wait a moment, please. Richard will be back ______.A．in no timeB．at no timeC．at timesD．at

● Consumption of the total life－cycle effort in software maintenance is （71） that in softw

（）is not included in the main contents of the operation and maintenance of the information

Agriculture was a step in human progress ______ w

What progress has been made in their negotiations