The committee is discussing the problem right now.It will _____ have been solved by the end of next week.
We laugh at jokes,but seldom about how they work.
_____ playing dumb with teachers. They know very well their students.
They thought my suggestion reasonable _______a few experts to help them.
_____but he still couldn’t understand the logical connection of the two subjects.
It was not until he came back _____ he knew the police were looking for him.