Questions：
1.Two mother sand daughters are planning to go to Londonby train.How many tickets should they buy？
有两对母女要坐火车去伦敦旅行,至少要买几张票？
2.Where have I seen your face before
我以前在什么地方见过你？
3.What al ways enters the house through the keyhole insteadof the front door？
什么东西很少从门进来，大部分时间是从钥匙孔进？
4.What's the best cure for insomnia？
如果你失眠了，医生给你开具什么药方是最有效的?
the moment of uncovering secrets！
Keys:
1.Three,for they're daughter,mother and grandmother.
三张,因为这两对母女由女儿,母亲,外婆组成.
2.Where it is now.
此时此地
3.A key.
钥匙.
4.A good night's sleep.
好好睡一觉.