Look，mygrandmotheris_____mygrandfather
A、ontheleftofIthinkthe______(four)lessonisthemostdifficultinthisbook.
I have a pen friend，and we always send e_____to each other by computer
He _____ hamburgers
()There are _____ on the table.
is ，the ，what ，weather ，today ，like
____________________________________________
