日本語をクリックすると英文が表示されます。まずは自分で英語にしてから答え合わせを。
I'm sure the slots are all booked.
Maybe it requires a reservation.
I'm sure it requires a reservation.
Maybe the slots are all booked.
Maybe the tickets sold out.
I guess the tickets sold out.
I guess the slots are all booked.
I heard it requires a reservation.
I guess it requires a reservation.
I heard the slots are all booked.
I heard the tickets sold out.
Do you think the tickets sold out?