David is playing ______ basketball in the playground.A.a B. the C. \
你想让对方看你的卧室,应说:A.Look at my bedroom. B.Look my bedroom.
你想知道垃圾箱在哪里,应问:A.What's the trash bin? B.Where is the trash bin?
There is a bridge the river.A. on B. in C. over
There are bridges in the park. A. some B. any C. a
----Is there a lake? ----No,there . A. are't B. is C. isn't