---It’s time for class.

---Let’s         .

A.begin   B.begining  C.beginning

It’s time for class . Let’s stop          .

Please stop ______.It’s time for class.

1. A.
   to talk
2. B.
   talk
3. C.
   talking
4. D.
   speaking

Stop _______ . It’s time for class.

A. talk          B. to talk      C. talking

--There goes the bell.
--It's time for class. Let's stop       .
A. talk                    B. talking             C. to talk