common mistakes in english grammar

Is this sentence correct? "We came by the 6:15 o'clock bus"

Is this sentence correct? "Who cooked this salad"

Is this sentence correct? "You speak English good"

Is this sentence correct? "I have visited London last weekend"

Is this sentence correct? "The girl is afraid of the dog"

Is this sentence correct? "The women wich works here is from France

Is this sentence correct? "He was bored in the class"

Is this sentence correct? "His temperature came down"

Is this sentence correct? "George told the story in detail"

Is this sentence correct? "This is the way how I did it"