【Skill 1】Understand that a suggestion has been made
When the speaker uses the following expressions which include いい (good), the speaker is making a suggestion.
■ がいい（it's good）
■ ばいい（it should be good）
■ てもいい（it may be good）
■ たらいい（it should be good）
When the speaker uses the following expression which includes どう (how about), the speaker is also making a suggestion.
■ たらどう（how about）