. The baby is sleeping.
| A．Not talk | B．Not talking |
| C．Don’t talk | D．don’t talking |
The_______ of most trees will fall in autumn.
A leaf B. leafs C leaves
You ______ wear sports shoes when you climb a mountain.
| A．can’t | B．shouldn’t | C．mustn’t | D．have to |
Thomas wants to know ______Nina lives.
| A．where | B．who | C．what | D．if |
He didn’t go there yesterday, _______he?
| A．did | B．does | C．didn’t | D．doesn’t |
He ______when the UFO arrived. He didn’t wake until the UFO disappeared.
| A．slept | B．was sleeping | C．was doing homework | D．was singing |