ちょっと待___ください。
Q. Which form of 待つ correctly completes this 'please...' request?
Translation
Please wait a moment.
Explanation
〜てください (please do ...) attaches to the te-form. 待つ is a tsu-ending godan verb, and つ→って, giving 待って. んで is for verbs ending in ぬ/ぶ/む (e.g. 読む→読んで).