How _____ (happy) they are relaxing!

How _____ (happy) they are relaxing! How () happy they are! how happy they are playing! How happy they are. 什么意思? how happy they are playing 改错, A___________?They are very relaxing. How can they be happy i____ they are not free? They are singing----------.How ------they look.happy.happily How _____(/,old)are they? They are ten. 是how happy they are 还是 what happy they are 为什么 Look at these c_____ ,how happy they are. How happy the kids are!They have nothing _______.