Select the most appropriate meaning of the underlined idiom in the given sentence.

I bought some extra copies from the stationery shop. These may come in handy during exams.

Be useful

The most appropriate meaning of the underlined idiom in the given sentence is be useful.

The idiom "come in handy" means to be useful or convenient, especially in an unexpected situation. It is often used to describe something that is not usually needed, but can be helpful in a particular situation.

In the given sentence, the speaker is saying that the extra copies they bought may be useful during exams. This means that they may need the extra copies to study, to take notes, or to finish their exams.

The other options are incorrect:

• Cause trouble: This is not the meaning of the idiom "come in handy."
• Be sold: This is not the meaning of the idiom "come in handy."
• Bring luck: This is not the meaning of the idiom "come in handy."