1 They'll travel round the world _by plane___.(对划线部份提问)

1 They'll travel round the world _by plane___.(对划线部份提问)
____ _____they travel round the world
2 This cast me _¥100000_.(对划线部份提问)
______ ___ _this car cost?
3 My parents go to swim _twice a month._(对划线部份提问)
_________ ____your parents go to swim
4 It's _eleven thirty._(对划线部份提问)
______ _________ _____ ______?
5 The students took an exam last Monday.(改为否定句)