Is the boy in white clothes your friend, Kangkang? —No. ____ in black clothes is.

Dad, must we wait until the light becomes green?—Yes,I’m afraid we.That’s the traffic rule.

Can Mr King spare some time for the evening party? — If he ______, he will try his best to make it.

The headmaster didn’t make clear when and where the sports meeting would be held.

Do you know whether scientists have ________a good way to deal with Influenza H7N9 or not?—Not yet .But they’re trying their best.