When you are _______ about which button to press on the complicated machine, you can either read the user’s guide for guidance or fax us for specific instruction. Don’t ______ the trial-and-error method.[ ]

Are you ___________with your English study—-Yes， I have improved it greatly.

Tom was _____ to win the first prize in the competition, but his illness made him miss the chance. [ ]

What do you think “anxious” ______

d you _______ a drink— No, thanks. I have given up drinking.