請幫我正確中翻英拜託不要用翻譯軟體或翻譯機

It has been a while that we don't see each other since last barbecue party. I sincerely hope that we can stay in touch.

自從上次烤肉到現在我們已經好不見了..我很希望你們有空可以跟我常連絡.

It's been a while since I last saw you guys at the barbecue...I really hope we can get in touch sometimes when you guys are free.

It's been a long time since I last saw you at the barbecue; I hope you guys can get in touch with me when you have time.

It has been for a long time since we met at the BBQ party last time. I hope you may contact me frequently, if you are not busy.

Since the last barbecues and now we have well gone ... I very much hope that you will have an empty can contact with me.