điền các từ sau vào chỗ trông sao cho thích hợp: safety; sign; crossroad; pilot; rush hour; traffic jam
1, we were struck in a ___________ for an hour this morning
2, go straight to the second _________ and then turn left
3, the roads and streets always become crowded in _________
4, you mustn't turn right when you see the _____________ of No right turn
5, for your ________, we recommend you keep your seatbelt fastened during the flight
6, my brother is learning to fly the planes. He wants to become a _____________
`1,` traffic jam
`2,`crossroad
`3,` rush hour
`4,` sign
`5,` safety
`6,` pilot