53. --- Please tell me how to work out this maths problem.--- Use your ______ , then your find a way.
I suggested that he _____ the manager before he decided.
His failure in the experiment suggested that he ________ his teacher’s proper instructions.
Professor Hawking stepped into the office I knew that there was no hope.
Usually children are allowed to ___________ when they are six years old.
.Our team was ahead during the first half, but we _____ in the last ten minutes.