Computer grammar

We didn’t expect the computer … the results in some seconds.

•   had yield

• has yield

•  would yield

• will yield

   If you turn off the computer, everything that … in RAM disappears.

•   has been stored

• has stored

• been stored

• being stored

They make a clever piece of software, which … on Mac OS X operating system.

• provides

• seeks

• improves

• runs

Such handy software utilities allow smartphones to be used as wireless remote-controls … a Bluetooth link.

• via

• on

•    at

• over

For two decades programmers have distributed their programs  as  … via the Internet.

• instruction

• shareware

•    hardware

• software

CAD is often referred as computer assisted … .

• drafting

• testing

• displaying

• developing