Mary said they _____________________with each other for six years before they got married.
---You seemed to have been impressed by his songs. ---Well, not exactly so. It was his way of singing____ his voice that really impressed me.
Knowing how long the test would last, the students who finished ____ and waited until the end of the exam.
. --- He has to finish the experiment today. He must be in the lab,________? ---That s quite possible.
“Long time no see”is _______sort of imformal, but it is part of ______language Americans use daily.
In this factory, suggestions often have to wait for months before they are fully _____.