(sentence), though

"Though" is similar to "but" and "however". It is usually used at the end of the sentence in spoken English:

I have a pilot's license. I haven't flown in almost 5 years, though.

In written English, it's more appropriate to use it between clauses:

I have a pilot's license, though I haven't flown in almost 5 years.

"However" can be used in the same way:

I do agree with the Prime Minister on defense, however.

"Though" is more casual than "however", though.

(someone) is open to (an idea)

When you are "open to" a suggestion, it means that you might consider it. You don't mind thinking about it, and you might be convinced to follow the suggestion.

For example, if you're trying to pick a restaurant to eat at, and a friend asks you whether you like Ethiopian food, you might say:

I don't know. I've never had it. But I'm open to trying it.

You can ask someone whether they're open to a particular idea or suggestion:

Would you be open to the idea of selling your business if someone made a strong offer?

The opposite of "open to" is "not open to":

It seemed like she wasn't open to any other suggestions.

suggestions

"Suggestions" are ideas that people suggest.

You can ask whether someone has suggestions when you encounter a problem:

A: What are you going to do?

B: I don't know. Do you have any suggestions?

You can also talk about your own suggestions:

I have a few suggestions, if you're interested.