have to - At the airport, you __ show your ID to go through security, can’t. - You __ bring more than 100 ml of liquid in your carry-on, must - Passengers __ fasten their seatbelts during takeoff and landing, can. - You __ bring your own food if you don’t want to buy airplane food, must. - In the UK, you __ drive on the left side of the road, don’t have to. - You __ arrive at the airport 3 hours before an international flight, but it’s recommended, can’t - Passengers __ smoke on the plane; it’s illegal., can - If you’re a student, you __ get a discount on train tickets,

Modal verbs

由
打印
嵌入

排行榜

视觉风格

选项

切换模板

恢复自动保存：？