-Jim, is physics difficult to learn in high school?-Sure. No subject can be learned well hard work.
— Does David have a ping-pong ball? —________. But he has some tennis balls.
.Hi,Linda. This _____ my sister and those ______ my brothers.
_____ your brother_____ baseball?
— ______are my dictionaries ? —They’re in the schoolbag.
_____ pencil box is beautiful. But_____ is more beautiful than _______.