It was freezing last night, so they had the fire___ all night long.
| A．to burn | B．burned | C．burn | D．burning |
Our new system will come into effect soon, _______ more efficient use we can make use of it.
| A．allowing for | B．heading for |
| C．accounting for | D．answering for |
Remember that the best relationship is one _______ you love for each other is greater than your need for each other.
| A．that | B．which |
| C．when | D．where |
Please look at the notice! Smoking is not allowed here. If you _______ smoke, go to the special area, please.
| A．shall | B．will | C．must | D．can |
Alan gave us the reason for his coming late to class _______ his bicycle broke down on his way.
| A．why | B．where |
| C．that | D．which |
E-libraries are more and more popular in that they give us access to books when we are unable to _______ get to a library.
| A．accidentally | B．physically |
| C．voluntarily | D．appropriately |