The students stop __________ when the teacher came in.
| A．to talk | B．talking | C．talked | D．talk |
Tell the boy the news. He is ______to understand it.
| A．enough old | B．enough young | C．old enough | D．young enough |
Class is over. Let’s stop______ a rest.
| A．having | B．to have | C．had | D．have |
--- _________ difference the day made! We were very happy.
| A．what | B．how | C．what a | D．how a |
--- I didn’t bring back anything from America.
--- _________ at all? Why not?
| A．Anything | B．Nothing | C．Something | D．Everything |
I don’t know if Mike _______to my school tomorrow.
If he____, I will be very happy.
| A．comes; comes | B．came; will come |
| C．will come; comes | D．will come; came |