当你的同学想借用一下你的文具时,你很乐意借他一用,你该说:A. Thank you.B. Can I use your eraser?C. Certainly.
I ___the blackboard, but I can’t ______a word.
The word “fish” has ____“s”.
The man__________blue is Mr. White.
There are some birds___________the tree.
--_____you busy last weekend?--Yes, I helped my mother clean the house and the garden.