一个四棱锥和一个三棱锥恰好可以拼接成一个三棱柱.这个四棱锥的底面为正方形,且底面边长与各侧棱长相等,这个三棱锥的底面边长与各侧棱长也都相等.设四棱锥、三棱锥、三棱柱的高分别为,,,则( )
Now that we’ve discussed our problem, are people happy with the decisions ________?
When we visited my old family home, memory came ________ back.
At the age of 29, Dave was a worker, ________ in a small apartment near Boston and ________ what to do about his future.
Ladies and gentlemen, please remain ________ until the plane has come to a complete stop.
Michael’s new house is like a huge palace, ________ with his old one.