Once new difficulties __________ in your work, it's always important to use your brains.
30.Mike has an active mind;he can retell a story_________anybody else in the classroom.
29.The attackers were arrested and didn’t know where they ______.
28.___________a time in the 1960s when young people liked wearing army uniforms.
27.We tried hard,and eventually,we were able to get Mike______us his car just for a day.
26.—Why are your hands so dirty? —I________in the garden.