请将Is there a leaf on the tree改为复数

Are there any leaves on the tree?‘
These are orange watches.
these are pairs of socks .
再问： there is a red strawberry on the plat how much is the knife? It is 15 dollars. 许多不会，这类题不太会
再答： there are some red strawberries on the plat how much are the knives? They are 15 dollars