Of the three books, this one is the __________.
A.thinnest B.thinner C.thinest
Please look____the baby when I go out.
A.for B.in C.after
Tony must _____ good at ice-skating.
A.is B.be C.are
Do you like_____, Gogo? Of course .Let’s go.
A.swim B.swimming C.swimming
This is ____ very expensive watch.Don’t touch it.
A.an B.a C.the