It was not until dark ______ he found ______ he thought was the correct way to solve the problem.
| A．that; what | B．that; that | C．when; what | D．when; that |
I advised you _____ drink water that isn’t ______ any more.
| A．not; boiled | B．not to; boiling |
| C．not; boiling | D．not to; boiled |
— ________?
—No, you have to pay for them.
| A．Are the drinks free | B．Do the drinks cost much |
| C．Are the drinks expensive | D．Do I have to pay for the drinks |
Is this the reason at the meeting for his carelessness in his work?
| A．he explained | B．what he explained |
| C．how he explained | D．why he explained |
It’s freezing outside. You ______put on your coat.
| A．had better to | B．had better | C．would rather | D．would better to |
Jack asked his brother Betty.
| A．did he know | B．if he knows | C．does he know | D．whether he knew |