We have ______ a date for the wedding.
A. aim to
B. decided on
The project we discussed yesterday _____ provide an outlet for children's creativity.
A. aims to
B. stand for
Don't ____ your problems to dominate your life.
A. set goals
B. allow
2-18以下机床的运动属于主运动的是（）。
A. 车床刀具移动
B. 钻孔时钻头的移动
C. 刨削时牛头刨床刨刀的往复运动
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