People are planting trees on________12th in China.A.March B.May C.June
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