—How do you study______a test ?—I study _____working with a group. A for, in B for, by C for, by D of, in
The story made everyonehappy.
It’s necessary for usEnglish well.
Mrs Brown looks young., he is over 70 years old.
—When did the planeBeijing? —Sorry, I don't know.
Which is, the sun, the moon or the earth(地球)?