78．I don’t know what 　　　　　(present)．

77．What 　　　　　(happen) to the first steam locomotive?

76．Television is another way of 　　　　　(say) “bike”．

75．Would you please 　　　　　(help)me with my English?

74．I 　　　　　(read)the book, I know how to cook the meal．

73．He is ready 　　　　　(1earn)the experiment．

72．He 　　　　　(think)I could help him．

71．Grandma 　　　　　(cook)breakfast while I 　　　　　(wash)my face this morning．

70．Kong Fansen was born in a small v　　　　 　in Liaocheng．　

69．Motors are the e　　　　 　that use gas．