I’m afraid nobody but his parents or Jim, his best friend, _____ the secret.
Day after day, they dragged their feet on and arrived at their destination ________.
My younger sister enjoys listening to music very much, with pop music _______.
Please tell me how the accident_____. I am still in the dark.
American Indians ________ about five percent of the U.S. population .
I can think of many cases ______students obviously know a lot of English words and expressions but couldn’t write a good essay .