【单选题】The whole program is well designed, but some details need further ______ by some experts.
【单选题】She ___________ some vegetables. [ ]
【判断题】两台三相变压器只要连接组别相同就可以并联。
【单选题】They need some help, ____ they?
【单选题】He says “____________” to his parents before he goes to bed.