Verified answer

1.) DUE TO

• The reunion was suspended due to the pandemic.
• Due to my absence yesterday, my teammates had to play without their team captain.
• My friend's flight to Australia was cancelled due to the strong winds and heavy rainfall.

2.) HOWEVER

• My friends invited me to play online games with them, however, I still had to make my school project.
• Kuya Xymon volunteered to walk my dog since I was busy with online classes, however, my dog seemed to dislike my brother.
• My classmate invited me to her birthday, however, I and my family are out of town so I had to tell her I couldn't attend.