Where’s Tom ?His mother him now.
| A．is looking for | B．will look for |
| C．has looked for | D．looks for |
Listen! Someone _________ for help!
A. called B. is calling C. has called
I am going to make ________special house for my pet pig this weekend.
A. an B. a C. the
Healthy food and exercise help ________to study better.
A. us B. we C. our
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