It was not until dark ________ he found ________ he thought was the correct way to solve the problem.

Mr Smith, please teach me how to draw on the computer today.—Oh, no._______. You have to get familiar with the keyboard first.

We can’t ________ the bus before it stops.

May I have your __________—Yes, a large bowl of beef noodles, please.

Could you tell me how many books I can borrow at a time— Sorry, ______ at all. Our compute system is updating.