Giúp mình với ạ Giúp mình với ạ

Bài 11: Điền liên từ thích hợp vào ô trống để hoàn thành những câu sau: they were too busy to eat. 1.They haven't eaten anything since the morning 2.James is very excited now he is going abroad next month. 3. it it may be very challenging for you to do it, you can give it a try. I came ...