Dad, science is too hard for me.—Oh, dear, if you keep listening ________ in class and do enough exercises, you’ll find it easy.

下列各项中，句式完全相同的一组是

— What are on show in the museum? — Some photos _________ by American children[ ]

1Shall we go to Mcdonald’s（麦当劳）— Um,it great.

Large quantities of information, as well as some timely help _____ since the organization was built