---I saw the 3D printer print some cartoon characters at the science fair.---Sounds fun! I believe such technology will be ______ used in many waysA.widely B. difficultly C. clearly
— _____ you stay in America every summer? —For two months.
Mary isgirl, but she knows a lot about science.
Find the answer _____ the question, please.
It is a good time _____.
They each _____ a CD in their bags.