Mr. Green works in office, but his sister works a farm.A.a, in B.an, in C.an, on
--- What color is it? --- ______.
--- ? --- Yes. W-A-T-C-H, watch.
--- _______, Sonia. Is this your pencil case? ---Yes, thank you.
–What’s that_____ English? –It’s a map.
There is ____ “u” and _____ “r” in the word “number”.