I guess that the others would be ~ right around now.
I think everyone would be ~ now.
ご質問ありがとうございます。
例文にしておきます:
① "I guess that the others would be eating their lunch right around now."=「他のみんなは今ちょうど昼ご飯を食べているころだろうね。」
② "I think everyone would be setting up their tents now."=「今は、みんなテントを立てていると思うよ。」
ご参考になると幸いです。
この場合、次のような言い方ができます。
ーI bet everyone's eating lunch at the top of the mountain right now.
「今頃、みんな山頂でお昼を食べている頃だろうな」
I bet everyone's ~ing right now. を使って表現できます。
ーI would guess people are about to board the airplane to go to Paris now.
「今頃みんなパリ行きの飛行機に搭乗している頃だろうな」
I would guess people are about to ... now. という言い方もできます。
ご参考まで!