Is there an agreement __________ how much aid will be sent?
But for your timely help, I ________ the project as scheduled.
That student admitted ____ in the math exam, _____ that he would never do that again in the future.
If ____ unsolved, the problem of food safety may lead to more serious results.
---Tom almost ran into a pole yesterday while driving on the highway. --- I suppose he ____ too fast.
Nowadays, in some western countries, coffee is ____ most popular drink, while tea comes ____ second.