—Tom read the passage and found
| A．carefully enough; something important |
| B．enough carefully; important something |
| C．enough carefully; something important |
| D．carefully enough; important something |
I think _____ is very important for students to study by themselves in the school or at home.
A. it B. this C. that
Could you please tell me_?
A. why does the earth go around the sun
B. why the earth goes around the sun
C. why the earth went around the sun
The baby is sleeping. Please__the radio.
A. turn on B. him down C. turn up
We will climb the mountain tomorrow_it doesn't rain.
A. if B. although C. since
Boys and girls, the books in the library should______ good care of.
A. take B. are taking C. be taken