It took them a week to _________ out how to operate the machine.
举一反三
- I wish I _____ how to operate the machine.
- Greatly________(interest), she asked the worker how to operate the machine.
- No matter how hard I tried to explain how to operate the machine, they were still at a loss.
- Could you show me ______ to operate the machine A: if B: who C: what D: how
- Watch the video clip about how to operate a fax machine and put the following steps into the right order.