Réponse :
a. / think/ that/l/more tiring /a bus/ driving/than /is/ a train / operating /
i think that driving a train is more tiring than driving a bus
b. /a motorhome/is/ than/in/more convenient / my/opinion/much/a caravan/
My opinion is a motorhome is much more convenient than a caravan
c. /less paid/l/than/am/ that/is/ sure / a mechanic/a doctor /
i am sure that a mechanic is less paid than a doctor
d. / are/ believe /1/ that/ love affairs / unhappy / worse / money problems/than /
i believe that love affairs are worse than money problems are
(ou)
i believe that money problems are worse than love affairs are
Explications :